Polymycin
多链丝霉素
🗣️ 情景例句
Please go over it and see if everything is in order.
请再过目一下，看看是否都符合规定。
Prove thy friend ere thou have need.
在你需要朋友帮助前，先要考验他们。
A bad workman quarrels with his tools.
手艺差的工人总是抱怨工具不好使。