Between the 1620s and the 1740s, the land of the Russian empire increases from 2.1 million square miles to 5.9 million square miles.

在17世纪20年代到40年代间,俄帝国的领土,由210万平方英里,增加到590万平方英里

耶鲁公开课 - 欧洲文明课程节选

It's a small city. It's only 49 square miles, seven hundred thousand people.

这城市不大。只有49平方英里，70万人口。

旧金山的公共交通 - SpeakingMax英语口语达人

So, I already said what the number of square miles that were increased, but it increases from six to sixteen million of the population.

我已经提过了领土扩大的面积有多少,而人口从六百万增加到一千六百万

耶鲁公开课 - 欧洲文明课程节选

Now Attica is, in fact, approximately 1,000 square miles, which I am told is about the size of Rhode Island, and that's the biggest polis of which we know.

阿提卡,事实上,大约一千平方英里,我听说大概和罗德岛差不多大,而这就是我们所知的最大的城邦

耶鲁公开课 - 古希腊历史简介课程节选

Sometimes they give you the speed in miles per hour, kilometers per year, pounds per square foot.

有时候速度的单位是英里/小时,千米/年,英磅/平方米

耶鲁公开课 - 基础物理课程节选