Mef
abbr. maximal expiratory flow 最大呼气流量
🗣️ 情景例句
Malcolm, this is Joanne Thompson. Malcolm
这是Joanne Thompson。
He that has a tongue in his head may find his way anywhere.
遇事多问，随处可行。
Last week No.14 Middle School held a sports meeting on the playground.
上星期第十四中学在操场举行了一次运动会。