单词：switching-off
switching-off的用法和样例：
例句
- Are the ship's main radio transmitter aerials earthed and radars switched off?船上主要的无线电发射天线是否已接地，雷达设备电源是否已断开？
- 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.每当机器进入工作状态，它们会把让它们做的工作进行下去，直到电路断开或坏了为止。
- He turned off the light before going out.他出门前把灯关掉。
- Do you mind if I switch the radio off?我可以关掉收音机吗？
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