重点讲解：
1. switch on 打开,开启(电灯等)；
例句：He didn't bother to switch on the light.
他懒得去开灯L+t1HlKaAZ-bZso。
2. eavesdrop on 偷听；窃听；
例句：Some journalists will always try to eavesdrop on the private conversations of the Royal family.
有些记者总想设法偷听皇室成员的私下交谈
3. and so on 及诸如此类；等等；
例句：Consumer durables such as refrigerators, television sets, bicycles and so on were produced in large quantities.
冰箱、电视、自行车等耐用消费品被大批量地生产出来C=IZnpBJyONN=C_i。
3. after all 毕竟；终究；
例句：There is no need to pick at him all day long. He's a child after all.
不要老是对他唠唠叨叨，他毕竟还是个孩子嘛！