Defease reaction
[医] 防御反应
🧩 词语组成解析
vt. 使作废，废除(合同、契约等)：
🗣️ 情景例句
I'm a foreign student, and I'd like to make some new friends.
我是个外国学生， 我想交几个新朋友。
I'm sorry,but both of them are busy right now.
很抱歉他们现在很忙。
How old are you?
你多大啦？