I had to walk up five flights of stairs .

我得走上五层楼的楼梯。

They had a battle on the stairs .

他们在楼梯上展开了一场战争。

Harry asked as they climbed the stairs .

他们上楼梯时，哈利问道。

A heavy step went down the stairs .

沉重的脚步声一路下了楼梯。

The shot had come from farther up the stairs .

枪声来自于楼梯上更高的地方。