它离城有3里路，虽然不大，但很美，这就是我们的学校，用英语怎样翻译

it is three miles from the city, although not big but very beautiful, this is our school.

this is our school, which is 3 kilometer to the town, not big, but very beautiful

It is 3 kilometers from the city, it's not big however it's very beautiful. This is our school

里是什么单位啊...可能是KM吧..

好像1KM是2里?
那就是1.5KM啦.

Our school is one mile away from town, its campus small but pretty.

逐字翻译的话：
It is one-and-half kilometres away from town. Though not big, it is very beautiful. This is our school.