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
Nixon also used chopsticks at the welcoming banquet in his honor.
尼克松在为其到来而举办的欢迎宴会上也使用了筷子。
OK.
好的。
The captain knew that another attempt would be made later, for the sunken ship he was trying to find had been carrying a precious cargo of gold bullion.
船长知道日后还会再作尝试，因为他试图寻找的沉船上载有一批珍贵的金条。