I want to turn on the light, where is the switch?
The light switch came away from the wall.
Our glasses have been switched, this is mine.
1.N-COUNT A 【switch】 is a small control for an electrical device which you use to turn the device on or off. 开关
Linda put some detergent into the dishwasher, shut the door, and pressed the switch.
Diddle the switch see if the light comes on.
2. N-PLURAL On a railway track, the 【switches】 are the levers and rails at a place where two tracks join or separate. The switches enable a train to move from one track to another. 转辙器
3. V-T/V-I If you 【switch to】 something different, for example to a different system, task, or subject of conversation, you change to it from what you were doing or saying before. 转向
The law would encourage companies to switch from coal to cleaner fuels.
Estonia is switching to a market economy.
4. V-T If you 【switch two things】, you replace one with the other. 调换
In half an hour, they'd switched the tags on every cable.
5. V-T/V-I If you 【switch your attention】 from one thing to another or if your attention switches, you stop paying attention to the first thing and start paying attention to the second. 转移 (注意力)
My mother's interest had switched to my health.