Contravalid
反有效的, 无效的
🗣️ 情景例句
You should be more patient with others.
你应该多容忍他人一些。
Let me get back to you.
我过一会儿打给你吧。
All the biscuits that were sent were carefully weighed.
凡送来的饼干都仔细地称量。