首頁(yè)英語詞典switchswitch的意思

switch

英 [sw?t?] 美[sw?t?]

英英釋義詞組搭配考試真題實(shí)用場(chǎng)景例句

近義詞swap trade shift substitute replace exchange turn change

vt. 轉(zhuǎn)換；用鞭子等抽打
vi. 轉(zhuǎn)換；抽打；換防
n. 開關(guān)；轉(zhuǎn)換；鞭子

CET4TEM4IELTS考研CET6中頻詞核心詞匯

詞態(tài)變化

復(fù)數(shù):?switches;第三人稱單數(shù):?switches;過去式:?switched;過去分詞:?switched;現(xiàn)在分詞:?switching;

中文詞源

switch 開關(guān)，閘，轉(zhuǎn)換器，轉(zhuǎn)換，交換

最終來自 PIE*swei,彎，轉(zhuǎn)，擺動(dòng)，詞源同 swing,swivel.引申諸相關(guān)詞義。

英英釋意

1. control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit

2. an event in which one thing is substituted for another;: "the replacement of lost blood by a transfusion of donor blood"

3. hairpiece consisting of a tress of false hair; used by women to give shape to a coiffure

4. railroad track having two movable rails and necessary connections; used to turn a train from one track to another or to store rolling stock

5. a flexible implement used as an instrument of punishment

6. a basketball maneuver; two defensive players shift assignments so that each guards the player usually guarded by the other

7. the act of changing one thing or position for another;: "his switch on abortion cost him the election"

英文詞源

switch: switch: [16] Switch originally denoted a ‘thin flexible twig’; it may have been borrowed from Middle Dutch swijch ‘bough, twig’. From the noun was derived the verb switch. This originally meant ‘beat with a switch’, but in the early 19th century the sense ‘bend or waggle to and fro like a flexible stick’ emerged, and this led on in the middle of the century via ‘divert’ to ‘turn off a train on to another track’ (the usage developed in American English, where the apparatus used for this is still known as a switch, as opposed to British English points).

By the end of the century this had broadened out to ‘connect or disconnect by pushing a contact to or fro’. The notion of ‘exchanging’ or ‘swopping’ did not emerge until as recently as the 1890s.
switch (n.): 1590s, "slender riding whip," probably from a Flemish or Low German word akin to Middle Dutch swijch "bough, twig," or swutsche, variant of Low German zwukse "long thin stick, switch," from Germanic base *swih- (cognates: Old High German zwec "wooden peg," German Zweck "aim, design," originally "peg as a target," Zwick "wooden peg"), perhaps connected with PIE root *swei- (2) "to swing, bend, to turn."

The meaning "device for changing the direction of something or making or breaking a connection" is first recorded 1797. "The peg sense suits the mech(anical) applications" [Weekley], cognates: switchblade, and these senses in English may be a direct borrowing from those senses in Continental Germanic languages rather than a continuation of the "pliant wand" sense. The meaning "a change from one to another, a reversal, an exchange, a substitution" is first recorded 1920; extended form switcheroo is by 1933.
switch (v.): 1610s, "to strike with a switch," from switch (n.). Related: Switched; switching. The meaning "turn (off or on) with a switch device" is first recorded 1853 of trains on tracks, 1881 of electricity, 1932 of radio or (later) television. Sense of "shift, divert" is from 1860. Meaning "to change one thing for another" is recorded from 1919. Switch-hitter is 1945 in baseball slang; 1956 in the sense of "bisexual person."

考試真題

Within two years, Leah shed the safety of her accounting job and made the switch complete.

The man in the Google vehicle reported that he assumed the bus would slow down to let the car out, and so he did not switch to the manual mode.

So take a step back, switch off the automatic pilot and actually stop and reflect about things like our priorities, our values, and our relationships.

students can switch to different discussions at any point

Large companies have a difficult time switching into new markets because there is a temptation to put existing assets into the new businesses.

Why do large companies have difficulty switching to new markets

They can easily switch to natural gas.

Switch off the refrigerator for a while.

Nadeau notices the pre-made macaron-and-cheese boxes in Scott's shopping cart and suggests she switch to whole grain macaroni and real cheese.

within two years, Leah shed the safety of her accounting job and made the switch complete.

When you hear people speaking of making a rapid transition toward any type of energy, whether it is a switch from coal to nuclear power, or a switch from gasoline-powered cars to electric cars, or even a switch from an incandescent to a fluorescent light, understanding energy system inertia and momentum can help you decide whether their plans are feasible.

When performing, he positions his instruments in a way that is deliberately inconvenient, so that switching from guitar to organ mid-song involves a mad dash across the stage.

When China talks about switching its dollar reserves to other currencies.

I needed to switch my computer class to the 950 section.

Many people now say the benefits of switching to vegetarian diet which excludes meat and fish.

However, some nutritionists advise against switching to a totally strict vegetarian diet

Packing up again with no picnic, Zac had to switch schools for the second time and space is even tighter

Let's hope they' re wise enough not to be fooled by a machine that claims to determine truthfulness at the flip of a switch.

Many dairy farmers were persuaded to switch to grass-fed when they saw its advantage in terms of profits.

Over the years, Tim Joseph's partners have helped many dairy farmers to switch to grass-fed.

So, instead of innovation for innovation's sake and new products being created simply because the technology is there, the company culture must switch from these point-in-time innovations to a continuous pipeline of innovations from everywhere and everyon

This mood switch made no difference to the three-month-olds; but for the nine-month-olds, it was enough to renew their interest and they started looking again in the direction of the face.

We can't switch off global warming just by being good in the future.

When you hear people speaking of making a rapid transition toward any type of energy, whether it is a switch from coal to nuclear power, or a switch from gasoline -powered cars to electric cars, or even a switch from an incandescent to a fluorescent light

And if a predator can move on to another species that is easier to find when a prey species becomes rare, the switch allows the original prey to recover.

For some reason, when certain shows switched into a commercial, a loud noise would sound for a few seconds.

Others say we can just "switch them off" as if super intelligent machines are too stupid to think of that possibility.

So if we send out a robot with the single instruction of fetching coffee, it will have a strong desire to secure success by disabling its own off switch or even killing anyone who might interfere with its task.

The nursery team switches him every few days with his sister so that while one is being bottle-fed, the other is with mum-she never suspects.

This switch has decreased pollution in the country's major lakes and reservoirs and made drinking water safer for people.

Few switch DNT on now, but if tracking is off it will stay off.

At Boston College, for example, you would have to complete an extra year were you to switch to the nursing school from another department.

When our brains switch between being focused and unfocused on a task, they tend to be more efficient.

詞組搭配

switch something off

turn off an electrical device

關(guān)上電器

switch something on

turn on an electrical device

打開電器

switch off 【非正式用語】

To stop paying attention; lose interest.

不再注意；失去興趣

實(shí)用場(chǎng)景例句

a light switch: 電燈開關(guān)

an on-off switch: 通斷開關(guān)

That was in the days before electricity was available at the flick of a switch .: 那是在過去，還沒有到開關(guān)一響就有電的時(shí)代。

Which switch do I press to turn it off?: 我按哪個(gè)開關(guān)就能把它關(guān)了？

to throw a switch (= to move a large switch): 扳動(dòng)開關(guān)

a switch of priorities: 輕重緩急的改變

She made the switch from full-time to part-time work when her first child was born.: 第一個(gè)孩子出生后她就從全職工作改為兼職工作。

a policy switch: 政策的轉(zhuǎn)變

a riding switch: 馬鞭

We're in the process of switching over to a new system of invoicing.: 我們正在轉(zhuǎn)用新的發(fā)票制度。

Press these two keys to switch between documents on screen.: 按這兩個(gè)鍵就可以在屏幕上的文件之間進(jìn)行切換。

When did you switch jobs?: 你們什么時(shí)候調(diào)動(dòng)工作的？

The dates of the last two exams have been switched.: 最后兩門考試的日期掉換了。

I see you've switched the furniture around (= changed its position) .: 我看出來你把家具重?cái)[了。

Do you think she'll notice if I switch my glass with hers?: 要是把我的杯子跟她的換了，你認(rèn)為她看得出來嗎？

I can't work next weekend─will you switch with me?: 下個(gè)周末我不能上班——咱倆調(diào)個(gè)班好不好？

Have you been able to switch your shift with anyone?: 你找著能跟你調(diào)班的人了嗎？

When I hear the word ‘football ’ I switch off (= because I am not interested in it) .: 我聽見“足球”兩個(gè)字就膩味。

The only time he really switches off (= stops thinking about work, etc.) is when we're on vacation.: 只有在我們外出度假的時(shí)候，他才真正無牽無掛。

Please switch the lights off as you leave.: 你離開的時(shí)候請(qǐng)把燈關(guān)了。

How do you switch this thing on?: 這東西怎么開？

Leona put some detergent into the dishwasher, shut the door and pressed the switch.: 利昂娜將一些清潔劑放入洗碗機(jī)，關(guān)上門后按了開始鍵。

...a light switch.: 電燈開關(guān)

Estonia is switching to a market economy...: 愛沙尼亞正在向市場(chǎng)經(jīng)濟(jì)轉(zhuǎn)軌。

The law would encourage companies to switch from coal to cleaner fuels...: 該法律將鼓勵(lì)企業(yè)轉(zhuǎn)而使用比煤更加清潔的能源。

My mother's interest had switched to my health...: 母親轉(zhuǎn)而關(guān)注起我的健康來。

As the era wore on, she switched her attention to films.: 隨著這個(gè)時(shí)代慢慢過去，她把目光投向了電影業(yè)。

In half an hour, they'd switched the tags on every cable...: 半個(gè)小時(shí)內(nèi)，他們就給每根電纜都換了標(biāo)簽。

The ballot boxes have been switched.: 投票箱被人調(diào)換了。

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switch

詞態(tài)變化

中文詞源

英英釋意

英文詞源

考試真題

詞組搭配

switch something off

switch something on

switch off 【非正式用語】

實(shí)用場(chǎng)景例句

考試詞匯

頻率詞匯

分類詞匯

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