M-f
[医][=(male/female)ratio]男女比率，男女比例
🗣️ 情景例句
When do you need the money?
你什么时候需要钱？
I wonder why they're angry.
伙计，他们为什么生气？
Did you leave it in water before you washed it?
在洗它之前您是不是把它泡在水里了？