Usually, we have a top sheet and a fitted sheet.

通常，我们有顶床单和床笠。

The top sheet -- it goes on top.

顶层——它在上面。

They like to use fancy words like fitted sheet, top sheet -- just two sheets.

他们喜欢使用花哨的词，比如合身的床单，最上面的床单——只有两张。

The " cover page" is the top sheet of paper that goes in front of your essay.

“封面”是位于论文前面的最上面一张纸。

You can use just two of these. Don't worry about it. The top sheet -- it goes on top.

您只能使用其中的两个。 别担心。 顶层——它在上面。

I changed his top sheet and his pillowcase, and then, when he finally slept again, I lay down a foot away from him and, a long time later, I slept too.

我换了他的床单和枕套， 等他终于睡着了，我在离他一英尺远的地方躺下， 很久以后，我也睡了。

This was easily done; and, thenceforward, Lupin, sure of success, had only to wait quietly until the sign agreed upon between him and his friends appeared upon the top sheet of the packet.

这很容易做到；从此以后，确信成功的卢平只需静静地等待，直到他和他的朋友们商定的标志出现在包裹的顶层。