personal flotation device 项链救生圈 ; 私人公司徽章图案
Pressurized dissolved air flotation device 加压溶气气浮装置
Flotation Device 漂浮装置
air flotation device 气浮装置
emergency flotation device 应急漂浮装置
individual flotation device 单人飘浮装置
centrifugal flotation device 离心浮选
Column gas flotation device 塔式气浮装置
They'd assigned me a "swim angel" with a flotation device in case I had trouble, but I left her behind.
他们给我分配了一个“游泳天使”，准备了救生设备以防我遇到麻烦，但我把她甩在了身后。
In deep water, where your feet can't touch the bottom, simulate running with your flotation device worn as instructed.
按说明正确穿戴漂浮装备，然后，在你的双脚无法触底深水中，依托漂浮装备的浮力模仿跑步动作。
If you can't swim well but you need to cross a large body of water, you can use your pants as a flotation device.
如果你游泳不好，但你需要游过一大片水域，你可以用裤子作为漂浮。
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