1.（电路的）开关，闸，转换器a small device that you press or move up and down in order to turn a light or piece of electrical equipment on and off
a light switch电灯开关
an on-off switch通断开关
That was in the days before electricity was available at the flick of a switch .那是在过去，还没有到开关一响就有电的时代。
Which switch do I press to turn it off?我按哪个开关就能把它关了？
to throw a switch(= to move a large switch)扳动开关
2.（尤指突然彻底的）改变，转变a change from one thing to another, especially when this is sudden and complete
a switch of priorities轻重缓急的改变
She made the switch from full-time to part-time work when her first child was born.第一个孩子出生后她就从全职工作改为兼职工作。
a policy switch政策的转变
3.（铁路的）转辙器，道岔the points on a railway/railroad line
4.（细软）枝条；鞭子a thin stick that bends easily
a riding switch马鞭
1.[i][t]（使）改变，转变，突变to change or make sth change from one thing to another
We're in the process of switching over to a new system of invoicing.我们正在转用新的发票制度。
Press these two keys to switch between documents on screen.按这两个键就可以在屏幕上的文件之间切换。
When did you switch jobs?你什么时候调动工作的？
2.[t]交换；掉换；转换；对调to exchange one thing for another
The dates of the last two exams have been switched.最后两门考试的日期掉换了。
I see you've switched the furniture around(= changed its position) .我看出来你把家具重摆了。
Do you think she'll notice if I switch my glass with hers?要是把我的杯子跟她的换了，你认为她看得出来吗？
3.[i][t]调班；临时掉换工作时间to do sb else's job for a short time or work during different hours so that they can do your job or work during your usual hours
I can't work next weekend─will you switch with me?下个周末我不能上班，咱俩调个班好不好？
Have you been able to switch your shift with anyone?你找着能跟你调班的人了吗？
Can we switch our shifts around?我们可以换个班吗？
What happened was just this: The wind began to switch. The house to pitch.
事情是这样发生的：风开始狂吹，房子开始掀翻。
That might be useful as a means to store information or to flip a switch.
这或许对存储信息和触动开关有用。
Even if it is slow to switch between them, you are probably working in only one or two at any given time.
虽然切换会降低速度，但在给定时间您通常仅使用其中之一或其中之二。
The company has also tried to market its products in a variety of different ways to convince users to switch away from rival engines.
微软还曾试图以各种不同的方式推销其产品以说服用户从劲敌的搜索引擎转换过来。
If you're used to a smoke with your morning coffee, switch to tea, or stop at Starbucks for a cup of java -- the chain is smoke-free.
如果你经常有工作后喝酒或者抽烟的习惯，请换成茶或者干脆停留在星吧客享受下无烟的美妙。
"Part of our 'fight or flight' reflexes to keep us alive includes the switch into the REM state of consciousness, " he said.
“帮助我们生存的‘挣扎或飘走’反射的一部分包括了意识转变到REM状态。”他说。
So far, the switch to the new school has been going better than I could ever have hoped for.
到目前为止，我女儿进入新学校的过渡进展得比我原来所期望得好得多。
We visited Foursquare HQ yesterday evening, just a few hours before the company flipped the switch on its new iPhone app.
昨天傍晚，我们参观了四方公司总部，恰好是在他们关掉新的iPhone应用程序的几个小时前。
He made a quick switch from an unfriendly to a friendly manner when he saw that they could help him.
当他意识到他们可以帮助他时，他的态度一下子从不友好变得友好了。
By altering just a single residue to reverse its charge, the researchers were actually able to switch the selectivity of the filter.
通过只改变单个氨基酸残基来逆转其电性，研究人员实际上能够关闭过滤器。
The example utilizes a queue and a topic on the queue manager, using the JNDI bindings to switch back and forth between them.
示例利用队列管理器上的队列和主题，并使用JNDI绑定在它们之间来回切换。
"The fact of the matter is that you have a whole generation switch, with very few people speaking only Cantonese, " he said.
他说：“事实的真相，是一场全面的更新换代正在进行，只说广东话的在新一代人中是极少数。”
Before any of these commands are implemented, each router and switch should be checked to see which VLAN encapsulations they support.
在执行这些命令之前，每一个交换机和路由器都要确认它们支持VLAN封装。
As you watch, the stories switch places on the screen, each with a green arrow if it's trending up or a red arrow if it's heading down.
你会看到这些新闻在屏幕中的位置在不断变换，如果点击量呈上升趋势，就用绿箭头，反之则用红箭头。
if he does, Mr Reid will have to find at least one Republican willing to switch sides to save his bill.
要是他说话算话，MrReid就只好另觅一个愿意变换立场的共和党人来拯救他的法案了。
Your opponent will likely switch targets quite often, trying to kill one of your Corruptors or Devourer Tanks before you start to heal it.
你的对手会频繁改变攻击目标，在你完全治疗她之前就试图杀死你的腐蚀者或者毁灭者坦克。
NIGHT. I love it. I function better at night and I would be the happiest if I could completely switch night for day.
N夜晚。我爱夜晚。我在晚上运作良好，如果能够日夜交换，我会非常开心的。
Without all the money the State just might have to switch off the lights.
没有这些钱可能政府会切断你的电源。
Then Wang Ping flashed a switch on a computer screen, and a table and chairs rose from under the floor as if by magic.
王平闪了一下电脑屏幕上的开关，于是一张桌子和几把椅子就像魔术般地从地面升了起来。
She stepped inside, her hand brushing the light switch as she closed the door behind her.
她迈进屋里，关门时顺手打开了灯。
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