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

So, that's one aspect in which it shares something with modernism, even though stylistically, and as a matter of craft and composition, it looks very distinct.

这是它涉及到现代主义的一方面，即使是从文体上，以及写作技巧上，它也是很独特的。

耶鲁公开课 - 1945年后的美国小说课程节选

The poet is asking for help with the composition of the poem.

诗人用创作诗歌来请求帮助。

耶鲁公开课 - 弥尔顿课程节选