M-f
[医][=(male/female)ratio]男女比率，男女比例
🗣️ 情景例句
The old couple has already been married for fifty years.
那对老夫妻结婚已经 50 年了。
Go farther and fare worse.
一动不如一静。
OK, Mum. I'll get it.
好的，妈妈。我来接。