The boys and girls made a lot of noise upstairs.

男孩和女孩在楼上制造了很多噪音。

Albert Jones, a small, thin boy with an anxious face, was struggling to carry a large bucket of water upstairs for his mistress's bath.

阿尔伯特·琼斯，一个瘦小的男孩，正努力把一大桶水搬到楼上给他的女主人洗澡。

I left my keys upstairs.

我把钥匙忘在楼上了。

He ran upstairs to get the book.

他跑到楼上去拿书。

The kids are playing upstairs.

孩子们正在在楼上玩耍。