She blushes because she feels sick.

她脸红是因为她感到不舒服。

She blushes because she is late for school.

她脸红是因为她上学迟到了。

Her face blushes because of the cold.

她的脸因为寒冷而脸红。

Every time she sees that handsome boy, she blushes.

每次看到那个帅哥，她都会脸红。

Man is the only animal that blushes or needs to.

人类是唯一会脸红，也是该脸红的动物。

Man is the only animal that blushes. Or needs to.

人是唯一会脸红的动物，或者说需要脸红。

Man is the only animal that blushes .

人是唯一会脸红的动物。

Presumably this was to spare Japanese women their blushes.

或许是为了免得日本女人脸红吧.

Man is the only animal that blushes . Or needs to.

人是唯一会脸红的动物,或者说需要脸红.

If she acts strange or blushes, then this is a clear sign she likes you.

如果她表现的很奇怪或是脸红，那么她肯定喜欢你。