adj.转换的
动词switch的过去式和过去分词形式.
The block becomes magnetic when the current is switched on. 通电时线圈即具磁性。
Please ensure that all the lights are switched off at night. 夜间请务必将所有的灯关掉。
We switched off the motor and started to drift (along). 我们关闭发动机开始滑行。
Our glasses have been switched this is mine. 咱们的玻璃杯对调了－－这个是我的。
He switched off the lights. 他关了灯。
He switched on the lights. 他打开了灯。
The loop becomes magnetic when the current is switched on. 通电时线圈就会有磁性。
He switched on the light and plumped up the cushions. 他打开了灯，拍松了靠垫。
非交换式
