switch

• Safety features include a switch .
  安全设施包括一个开关。
• We touch a switch to flood a room with light .
  我们打开电灯开关使室内灯光明亮。
• The electromagnetic interaction cannot be switched off .
  电磁相互作用不能撤掉。
• Sise switched on the headlights .
  赛斯扭开了卡车的前灯。
• I 'll be switched if you do .
  你要是能的话我就把头砍掉。
• Switch a train into a siding .
  把一列火车转入支线轨道。
• She switched on her radiant smile .
  她脸上堆满了笑容。
• Then he turned a switch and the voices stopped .
  他于是关上电门，说话声音就中断了。
• Could you switch the tv over ?
  请你改换电视频道好吗？
• Then the talk switched off to caves and swimming .
  接着谈话转到洞穴和游泳方面去了。