Benzanthacene
[机] 苯并
🗣️ 情景例句
How do you do?
你好。
To lose a freind is the greatest of all loses.
失掉朋友是一切损失中最大的损失。
He then changed into overalls and spent the next eight hours as a dustman.
然后换上工作服，当8个小时清洁工。