Eumycin
优霉素(获自枯草杆菌)
🗣️ 情景例句
Fine. How much would you like to exchange, sir?
好的。您要兑换多少呢，先生？
The years teach much which the days never know.
学问集年而成，而每日不自知也。
and since most medical men in the Health Services are overworked and have little time for offering time-consuming and little-appreciated advice on such subjects as diet,
因为卫生部门的大多数医生都超负荷工作，所以没有多少时间提出一些既费时而又不受人欢迎的忠告，如注意饮食、