turn off关掉,关闭；拐弯,使转变方向
Which could mean,if you really need to remember something important,turn off that TV.
这些能说明如果你真的想要记忆些重要的东西,关掉电视.
switch off（用开关）关掉；切断（电源）
Switch off the light before you leave.
在你离开以前,把灯关掉.
close关闭；关；结束
Close the journal.
合上日记本；
shut off 切断；关掉
The motor engine raced before it was shut off.
汽车引擎未被关停之前一度加快.