关闭：通过转动或按下按钮或移动开关、杠杆等来关闭某物。
断电
... switching on n. 接入；打开电灯开关；合闸 switching off断电；断开 switching time开关时间，转换时间；翻转时间；调车时间 ...
... switching on n. 接入；打开电灯开关；合闸 switching off 断电；断开 switching time 开关时间，转换时间；翻转时间；调车时间 ...
... Phobias 恐惧症 Switching Off 忘掉工作，彻底放松 Bruce Forsyth 布鲁斯▪福塞斯坞 ...
... 开闸 cut-off; switching off 泄水 weepage; sluicing 流槽选矿法 冲刷 冲泄 开闸泄水 sluicing ...
断电；断开
Switching off my PC, I noticed the time, 7.51pm.
关上电脑的时候，我留意了一下时间，是下午7点51分。
I remember switching off the lights before we left the room.
我记得我们离开房间之前把灯关上了。
Now doesn't that make you feel like switching off your broadband?
看到这是不是让你有了很想马上断掉你的宽带的冲动？
Kinases can, in many cases, serve as a mechanism for switching a protein on or switching a protein off.
激酶能够,在很多情况下,能够激活一种蛋白或者关闭一种蛋白
生物医学工程探索课程节选 : 耶鲁公开课
But when you start writing programs, especially when we get to web-based stuff where you want -- to check the user's input -- is it valid, is it an email address, -- and all these different scenarios -- it's actually often useful to be able to just enumerate them or rattle them off using this switching construct instead.
但是当你看是写程序时，特别是当我们,使用基于网络的东西，你想要,检查用户的输入-,它是合法的吗？它是不是一个电子邮箱地址？,所有的这些场景-,实际上它常常是有用的，当你用枚举结构列举它们,或者用它来快速地来说出它们。
计算机科学课程节选 : 哈佛公开课
That means switching on genes relevant to a particular function, and switching off the others.
ECONOMIST: The first complete DNA sequence of an animal is now in the bag
His method acknowledges that the first duty of television is to prevent the ruthless viewer switching off.
Well I managed to sit through the first twenty minutes of 'The Battle of Basra' before switching off.