Contravalid
反有效的, 无效的
🗣️ 情景例句
I always go back to the city in a wonderful state of mind.
我再回到城里时， 精神总是十分饱满。
Old birds are not caught with new nests.
新巢捉不到老鸟。
however good and adequate they may be both as parents and as individuals,
不管家长的人品有多么好，作为父母又多么合格，