they later said he was not armed. President Obama has rejected the release of photographs of the body, saying the images could incite violence.

VOA: special.2011.05.07

By determining how many of those molecules to hold onto, how many to keep in the body, how many to release determines the internal composition with regard to that ion.

通过控制体内这些分子的水平,即体内保有多少,又排出多少,就能够保证内环境中离子组成的稳定

耶鲁公开课 - 生物医学工程探索课程节选

use the whole body, hormones release, and then your body respond and get stronger.

用全身，分泌激素，然后你的身体会做出反应，会变得强壮。

要拥有好身材 - SpeakingMax英语口语达人