vary off的用法和樣例：
例句
- Are the ship's main radio transmitter aerials earthed and radars switched off?
船上主要的無線電發射天線是否已接地，雷達設備電源是否已斷開？ - Whenever the machines have been put in working order,they'll keep on doing the jobs they have been"told"to do until they are turned off or break down.
每當機器進入工作狀態，它們會把讓它們做的工作進行下去，直到電路斷開或壞了為止。
