up and down

副词 up and down:

1. moving backward and forward along a given course
2. alternately upward and downward

1. She paraded up and down in her new hat.
   她戴著新帽子在人前走来走去。
2. A butterfly is flying up and down among the flowers.
   有一只蝴蝶正在花丛里忽上忽下地飞着。
3. The teacher was walking up and down in the classroom.
   老师在教室里走来走去。
4. They were jigging up and down to the music.
   他们随着音乐的节拍轻快地上下跳着。
5. We bumped up and down along the gravel path.
   我们沿砾石小路颠簸而行。
6. He was walking up and down the station platform.
   他在火车站的月台上走来走去。
7. I don't mind living in a top flat. Going up and down stairs will be good exercise for me.
   住顶楼，我不在乎。上上下下爬楼梯对我会是很好的锻炼。
8. Johnson looked her up and down and decided to ask her out.
   约翰逊上上下下打量了她一番，决定邀请她出去。