Polymyxin
n. 多粘菌素\\n[化] 多粘菌素
🗣️ 情景例句
I want to send this letter to China, by air mail.
我想把这封信航空邮到中国。
Are there reserved seats on the train?
车上有预订座位吗？
The situation is serious. Something must be done before it's too late.
形势危急。得及时采取措施。