switch

vt.

1. 打开（或关掉）……的开关[（+on/off）]
   He switched the light on.

   他打开电灯。

2. 使转换；为……转接（电话）[（+to/over）]
   Hang on, please. I'll switch you to the manager.

   请不要挂断电话。我给你转接到经理那儿去。

3. 使转轨
   They switched the train to the other track.

   他们把列车转到另一轨道上。

4. 改变；转移；调动
   They switched the talk to a more interesting subject.

   他们把谈话转到比较有趣的题目上去了。

5. 【口】调换；交换
   The girls switched hats.

   女孩子交换了帽子。

6. 鞭打
   Mr. Wallace switched his son with his walking stick.

   瓦勒士先生用他的手杖打他儿子。

vi.

1. 转轨
2. 改变；转移[（+to）]
   He studied chemistry and then switched to biology.

   他原来学化学，后来改学生物。

3. 打开（或关掉）开关[（+on/off）]
4. 鞭打
5. 【口】调换；交换
   I am on duty tomorrow. I've to switch with someone to go to your party.

   我明天值班。我得和谁换一下班才能去参加你们的聚会。