Polypeptin
[醫] 圈桿菌素, 環[狀]桿菌素, 多肽菌素
??? 情景例句
Her boyfriend couldn't provide her with a sense of security.
她的男朋友無法給予她安全感。
Where is immigration?
入境處在什么地方？
It's none of your business.
關你屁事！