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- PFD - Personal Flotation Device;a life preserver. Position Finding Device,位置测定位，测位仪[器];
- SAFETY FIRST: Since you will be by water, all children should wear a life preserver (PFD or Personal Flotation Device). 安全第一.;只要在水边;孩子们都应该穿上救生衣
- personal flotation device 水上救生漂浮器
- In case of a water landing, you may be used as a flotation device. 由于要在水上降落,你可能要被。
- The man, who has not been identified, is believed to be the first person to survive a drop over the falls without any life jacket or flotation device. 这个不明身份的男子被认为是世界上第一个没有借助任何救生衣和浮游装置跳入尼亚加拉瀑布后生还的人。
- personal flotation devices 人员漂浮设备
- In the unlikely event of a water landing, your seat cushion may be used as a flotation device. 如飞机降落在水中，您的坐垫可用作救生器械;但这种情况不太可能发生。
- The air-sparged hydrocyclone has been used as a centrifugal flotation device since it was invented in the 1980s. 充气水力旋流器自从问世以来,一直被当作离心浮选设备来研究和使用。
- A stroller, for example, keeps a toddler safe at a crowded theme park; a Coast Guard-approved flotation device is literally a lifesaver for children around water. 例如：在一个拥挤的主题公园里用儿童车推着刚刚会走路的孩子才能保证安全，对于在水边玩的孩子来说，海岸警备认可的漂浮设备才是严格意义上的救生者。
- Several flotation devices in the swimming pool at a crime scene float in this shape. 在犯罪现场的游泳池里,一些漂浮着的水管设备形成了这个形状。
- However, toy versions of life jackets or flotation devices like "water wings" do fall within the CPSC's jurisdiction. 不过，玩具版的救生衣或漂浮装备，如“浮水圈”，需要符合美国消费品安全委员会(CPSC)的法规要求。
- Additionally, flotation devices including rings and armbands should not be used in the bath to ensure the safety of your baby. 此外，在沐浴中不应使用漂浮装置包括吊环和臂章以确保你宝宝的安全。
- They sing by striking their flippers against their chests to hit their pharyngeal pouches, balloon-like extensions of the trachea that are unique to Odobenus and that also serve as flotation devices. 牠们用鳍拍胸膛，打击咽囊，也就是气管的延伸，状似汽球，是海象独有的特徵，同时也有漂浮的作用。
- They shun personal fame and gains. 他们不计个人名利。
- Every person is accountable for his own work. 每个人都要对自己的工作负责。
- That kind of person is anything but a Marxist. 那种人根本不是马克思主义者。
- He is a very nice person to work with. 他是一个很好共事的人。
- Our reporter was the first person on the scene. 我们的记者是最先到达出事地点的。
- Jim is a warmhearted person to come and go upon. 吉姆是个热心人，可以信赖。
- In dragon boat rowing each person has one oar. 划龙舟时每个人都拿着一枝桨。
