In fact, the next First Lady has called her White House position, "Mom-in-Chief."

VOA: special.2009.01.16

John Rawls expanded on this and " he called it the "Original position".

约翰·罗尔斯对此做了进一步阐述,并称之为“原始状态。

耶鲁公开课 - 金融市场课程节选

There are more than 20 amino acids that make up the biological polymers called proteins, so there are 20 choices of each amino acid at a position on a protein.

而那些称为蛋白质的生物活性多聚体,是由二十种不同氨基酸所构成,因此每个蛋白质的,任意位点都有多达二十种氨基酸可供选择

耶鲁公开课 - 生物医学工程探索课程节选

Once you can take one derivative, you can take any number of derivatives and the derivative of the velocity is called the acceleration, and we write it as the second derivative of position.

只要你能求一阶导数,你就能求任意阶的导数,速度的导数被称为"加速度",我们把它写成位移的二阶导数

耶鲁公开课 - 基础物理课程节选