Libramycin
磅霉素
🗣️ 情景例句
What business are you in?
你从事哪一行？
I've lost my nerve.
我失去了勇气。
where chance discoveries play a much larger part than they do in physical and mechancal industries.
同物理和机械工业相比，化学工业中偶然发现的机会要多得多。