He didn't bother to switch on the light.他懒得去开灯。The switch on the wall was beyond the baby's reach.墙上的开关小孩子是够不到的.He snatched up the receiver and his free hand groped for the switch on the bedside lamp.他一只手抓起电话听筒...

switch on的音标：switch on的英式发音音标为：[switʃ ɔn]switch on的美式发音音标为：[swɪtʃ ɑn]...

打开，开动，启动，接入，起动...