M-f
[医][=(male/female)ratio]男女比率，男女比例
🗣️ 情景例句
He appeared ill at ease at the party.
他在宴会上显得很拘谨。
Yes, to be sure.
是的，没错
Here you are. Put them on, please. You must look after your clothes.
给你们，穿上吧！你们要好好保管你们的衣服。