Nivemycin
新霉素
🗣️ 情景例句
I'm thirty.
我三十岁。
An oak is not felled at one stroke.
万事不能一蹴而就。
The trickle became a stream; the stream has now become a torrent.
涓涓细流汇成小溪，小溪现已变成了奔腾的江河。