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1·Mr. Bullen gets up and begins to walk up and down again.

布伦先生起床，又开始来回走动。

2·Walk up and down the hotel halls.

在宾馆大厅里来回的走走。

3·Walk up and down for the allotted time.

在规定的时间里上下楼梯。

4·I saw her walk up and down in the classroom.

我看见她在教室里走来走去。

5·Walk up and down the aisle, or just pace in place.

上下过道步行，或者原地慢走。

6·Walk up and down the stairs, instead of taking the lift.

—用步行上下楼梯来取代搭乘电梯。

7·Stand up every two hours, walk up and down the plane.

每两个小时就在飞机上走动一下。

8·They walk up and down the streets of the large cities.

他们在大城市的街道走来走去。

9·Don't walk up and down. It may disturb others downstairs.

别来来回回走动，它会打扰楼下的其他人。

10·Go get some water. Use the restroom. Or walk up and down the stairs.

去喝点水，上上厕所，或上下楼梯。