[I,T] to change from doing or using one thing to doing or using another

转换，转变，改变:

She worked as a librarian before switching to journalism.

她在转行当记者前是图书馆管理员。

Duval could switch easily from French to English.

杜瓦尔能够流利自如地从讲法语转换到讲英语。

He switches between TV and theatre work.

他有时从事电视工作，有时从事戏剧工作。

The terrorists will switch tactics .

恐怖分子会改变战术。

He switched sides just days before the election.

就在竞选的前几天他改变了立场。

We want to switch the focus away from criticism.

我们想把重点从批评上转移开。

[T] to replace one thing with another, or exchange things

交换; 调换; 转换;

Tim may switch his BMW for something else.

蒂姆可能会把他的宝马车换成别的什么车。

We've switched the meeting from Tuesday to Thursday.

我们把会议从周二改到了周四。

It's not easy to switch clerical workers around.

想调换办公室工作人员并不容易。

[I,T] [AmE] if you switch with someone who does the same job as you, you exchange your working times with theirs for a short time

〔与同事〕调换〔上班时间〕，调班;

Tom said he'd switch with me on Saturday.

汤姆说他想周六和我调班。

He asked if we could switch shifts.

他问我们是否可以调班。

[T always + adv / prep] to change the way a machine operates, using a switch

〔用开关〕改变〔机器的运转〕，转换:

Switch the freezer to 'defrost'.

把冷冻柜开到“除霜”功能。

ON / OFF 开/关, a piece of equipment that starts or stops the flow of electricity to a machine, light etc when you push it

〔机器、电灯等的〕开关; 电闸:

Where's the light switch ?

电灯开关在哪儿？

an on-off switch

开关键

Tom flicked the switch, but nothing happened.

汤姆按了下开关，但什么反应也没有。

She claims she is willing to throw the switch of the electric chair.

她表示愿意按动电椅开关。

Petrol can be chosen at the flick of a switch.

只要按一下按钮就可以选择汽油。

CHANGE 改变, [usually singular] a complete change from one thing to another

骤变，突变:

an important policy switch

一项重要的政策改变

the switch from agriculture to dairy production

从农业向奶制品生产的转变

a switch in emphasis

重点的转移

More shoppers are making the switch to organic food.

更多的人开始改买有机食品。

RAILWAY 铁路, [AmE] a piece of railway track that can be moved to allow a train to cross over from one track to another

〔铁路的〕转辙器，道岔

STICK 枝条, [old-fashioned] a thin stick that bends easily

细软的枝条