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
I get off one job and go straight to another.
我辞了工作后马上又开始了另一个。
May I go out?
我能出去吗？
Modern industry is based on the conception of the maximum production at lowest cost,
以最低成本获取最多产品，