September fifteenth was chosen as the starting date because it is the anniversary of independence for five Latin American countries.

VOA: special.2009.09.18

We have a weight on the piston, and that weight is chosen so that p2 it acts as though p external is equal to p2.

让活塞上放一重物，让它的效果刚好,等同于外压强。

麻省理工公开课 - 热力学与动力学课程节选

Agamemnon has been chosen as the generalissimo and that is what gives him, temporarily, the title of wanax.

阿伽门农被选为临时大元帅,这就是某种意义上的王

耶鲁公开课 - 古希腊历史简介课程节选

The point is the arrow A, somebody has chosen to write in terms of i prime and j prime as Ax prime and Ay prime.

解决问题的关键在于矢量 A,可以用这样的形式来描述,i' ? Ax' + j' ? Ay'

耶鲁公开课 - 基础物理课程节选