shut(sth)off
—phrasal verbwithshutverb[IorT]uk/ʃʌt/us/ʃʌt/present participleshutting|past tense and past participleshut
If amachineorsystemshutsoff, or if someone or somethingshutsit off, itstopsoperating.
关机；关掉，关闭
Theengineshutsoffautomaticallywhen thedesiredspeedisreached.达到设定的速度后，发动机会自动关闭。