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1·We walked up a flight of stairs.

我们往上走了一段楼梯。《柯林斯英汉双解大词典》

2·We walked in silence up a flight of stairs and down a long corridor.

我们默默地走上一段楼梯，穿过一道长廊。《柯林斯英汉双解大词典》

3·The little boy fell headlong down the flight of stairs.

那小男孩头朝下跌下楼梯。《新英汉大辞典》

4·I fell down a flight of stairs.

我从楼梯上掉下来了。

5·She fell down a flight of stairs.

她从一段楼梯上摔了下来。

6·Owens accidentally fell down a flight of stairs.

欧文斯意外地在一段楼梯上摔倒。

7·My wife's pregnant, and she fell down a flight of stairs.

我怀孕的妻子从楼梯上摔了下来。

8·In another, toys were placed at the top of a flight of stairs.

在另一个实验，玩具放在航班的最高一层楼梯里。

9·Speeding up, slowing down. A pretty face, a flight of stairs.

心跳加速，心跳减速。美丽的面庞，一段楼梯。

10·I now marched up the 45-degree ladder as if up a flight of stairs.

现在，我在45度的梯子上行走，仿佛走在一段楼梯上。