Pef
abbr. peak expiratory flow 最大呼气流量; personal effects floater (policy) 私人物品保险，私人行李保险
🏥 医学释义
最大呼吸流量
🗣️ 情景例句
He has an old head on young shoulders.
他年轻又有见识。
She will be amazed when she wakes up for dinner.
她要是在吃晚餐的时候醒来。必定会大吃一惊。
We will use it for cleaning the inside of the ship. If we do this, we shall have less sickness. Please get me 300 litres. I think that will be enough.
我们将要用醋清理船舱。如果我们这样做的话，我们就会少生些病。请给我购买300升。我想这就够了。