Mef
abbr. maximal expiratory flow 最大呼气流量
🗣️ 情景例句
Max has stopped crying. Max
不哭了。
You should take the advice of your teacher.
你应该听老师的话？
It was carrying some large bags of rice. Suddenly one of the bags fell off the truck.
它运载着大包大包的米。突然一袋米从卡车上掉了下来。