And then,they might keep the original, and they'd send the copy off to somebody else.

接着，他们可能会保留原始书信，而把抄写本发给其他人。

耶鲁公开课 - 新约课程节选

Or they might keep the copy and send the original off to somebody.

或者他们保留抄写本,而把原始书信送给他人。

耶鲁公开课 - 新约课程节选

And the reason I was able to do that and keep with what my original intentions were was to have a career that was the fulfilling, in terms of helping people and being engaged in science, is all of a sudden I realized, as chemists, we can think about better ways to build molecules that are important for making medications.

我能够这么做,并且能不和我原来的打算冲突,是因为我的职业很有意义，能帮助他人，又和科学相关,于是突然我意思到，作为一个化学家,我们可以思考出更好的办法,制造出在制药方面十分有用的分子。

麻省理工公开课 - 化学原理课程节选