Pick up的意思是拾起，学会，搭车，接人，接收信号等。
例句：
I picked up the book and started to read. （我拾起这本书开始阅读。）
I picked up the phone and dialed his number. （我拿起电话拨了他的号码。）
The children were picked up from school by their parents. （孩子们由家长从学校接走。）
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