B synnematin
[医] 共霉素B, 头孢菌素N, 青霉素N
🧩 词语组成解析
共霉素
🗣️ 情景例句
Don't worry about being late. It's fine.
别为迟到担心了 没有关系。
I envy you.
我羡慕你。
Is it too small?
这件太小了吧？