Phenylenediamine
苯二胺
??? 情景例句
That child behaves just as he pleases.
那孩子想干什么就干什么。
This professor has put all of his students to sleep except two.
這位教授使得除了兩人以外的所有學(xué)生都入睡了。
'Excuse my interrupting you.
“請原諒我打斷了您。