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
What is your cancellation policy?
我怎么退票？
John would like to touch some of the sculpture in the art gallery.
约翰想触摸几件美术馆的雕刻。
but they did not go out of their way to court such excitement.
但是，他们并非故意寻求这种刺激，