为了测量两极之间的高程差，测量员在两极中间的一个水平基座上使用了光学水准望远镜。

To measure the difference in elevation between poles, surveyors used an optical level—a telescope on a level base—placed halfway between the poles.

youdao

然而，在教育，生活水平等方面，美国儿童也比欧洲国家的同龄人们要差。

But American children also fare worse than their European peers in other areas like education and living standard.

youdao

但是他们的身体机能却非常差，只相当于比他们年幼或年长很多的人的健康水平。

But their fitness levels were shockingly low and comparable to people either much younger or much older than their actual age.

youdao

Whereas, 27% of whites are reading at a low level, 22% of Asian-Pacific kids are reading at low level.

也处于低水平，然而，27%的白人孩子阅读能力很差，而22%亚太地区的孩子阅读能力很差。

麻省理工公开课 - 媒体、教育、市场课程节选

I'm Bob Field, and I will be lecturing today as a special booby prize, because Bawendi is so wonderful.

我是Bob，Field，今天由我来给大家讲课,其实跟Bawendi比，我的水平差远啦。

麻省理工公开课 - 热力学与动力学课程节选