pickup electrode

例句：

1. 1.The dog picked up the ball and ran away.
   狗捡起了球并跑开了。
2. 2.They picked up a new friend at the airport.
   他们在机场遇到了一个新朋友。
3. 3. I picked up a book from the library yesterday.
   我昨天从图书馆捡到了一本书。