switch

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

Leona put some detergent into the dishwasher, shut the door, and pressed the switch. 利昂娜在洗碗机里放了些清洁剂，关上门，然后按下开关。

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[美国英语]

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

Estonia is switching to a market economy. 爱沙尼亚正在向市场经济转变。

The law would encourage companies to switch from coal to cleaner fuels. 法律会鼓励各公司从用煤转向使用更清洁的燃料。

4. N-COUNT Switch is also a noun. 转变[usu with supp]

The spokesman implicitly condemned the United States policy switch. 这位发言人含蓄地谴责了美国政策上的转变。

5. PHRASAL VERB Switch over means the same as . 转变

Within a few years the whole country will switch over to digital television. 几年内全国将会换上数字电视。

6. 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. 我母亲的兴趣已转移到我的健康上来了。

7. 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. 半个小时内，他们换了每根电缆的标签。