Hmf
abbr. hollow metal frame 空心金属架
🗣️ 情景例句
They'll be here soon, and then we'll eat.
他们马上就到。他们一到就开饭。
Do I have to go to a hospital?
我应该住院
The system has worked so well, that it has been adopted in other countries too.
由于这种制度行之有效，已被其他国家采纳。