Peroxyacetyl
nitrate [化]硝酸过氧化乙酰
🗣️ 情景例句
What's this?
这是什么？
It was after dark when we got back,and we were all tired.
我们回来时天已经黑了，并且我们都很疲倦。
he had included a large number of funny stories in the speech and, of course, it was a great success.
他的祝词里面加进了大量逗人的故事，自然大获成功。