Mef
abbr. maximal expiratory flow 最大呼气流量
🗣️ 情景例句
I'd never been away from home,
我从来没有离开过家，
Cut it out, my name is Fred, not Fool!
你给我住嘴，我的名字是Fred，不是傻瓜！
I think you probably know China has adopted a flexible policy in her foreign trade.
我想你也许已经了解到中国在对外贸易中采取了灵活的政策。