Mef
abbr. maximal expiratory flow 最大呼气流量
🗣️ 情景例句
How come you speak such good English?
你为什么能说这么好的英语呢？
My grandparents live in the house next door.
我的祖父母住在隔壁的房子里。
He may never be sure where the next meal is coming from, but his is free from the thousands of anxieties which afflict other people.
他可能从不知道下顿饭有无着落，但他不像有人那样被千万桩愁事所折磨。