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
Don't mention it. What would you like to drink?
别客气，想喝点什么？
Your shoe lace is loose.
你的鞋带松了。
notes there are now work-stations that enable engineers to design, test and produce chips right on their desks, much the way an editor creates a newsletter on a Macintosh.
注意到，现在有些计算机工作站使工程技术人员可以在他们的办公桌上设计、试验和生产芯片，就像一位编辑在苹果机上编出一份时事通讯一样。