Pentachlorated
五氯化的
??? 情景例句
What is it?
那是什么？
Some do it for an endless pursuit of profit, and others, for the sake of the well-being of the society.
有人做生意是為了無止境的追求利潤，有的人是為了社會的繁榮。
My particular experience is largely in oil,
我是專門搞石油的，