Biodeterioration
生物变质, 生物退化, 生物腐蚀
🗣️ 情景例句
Good afternoon, Mr. Chen. Thank you very much.
下午好，陈先生。非常感谢。
Every salesman boasts of his own wares.
老王卖瓜，自卖自夸。
Who's that?
那是谁呢？