名词 nod:

1. a sign of assent or salutation or command

2. the act of nodding the head

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1. He nodded to me to leave the room.
   他向我点头示意让我离开房间。
2. She nodded her approval.
   她点头表示赞成。
3. The teacher nodded in agreement.
   老师同意地点点头。
4. I asked her if she wanted to come and she nodded.
   我问她是否想来，她点了点头。
5. He nodded me a welcome/nodded a welcome to me.
   他对我点点头表示欢迎。
6. She nodded (to me) as she passed.
   她从我身边走过时向我点头致意。
7. He nodded in agreement with me.
   他点头表示同意我的意见。
8. She nodded when she passed me in the street.
   她在街上走过我身旁时向我点了点头。