life buoy

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Related topics: Water

ˈlife ˌbuoy noun [countable]   TTWa large ring made out of material that floats, which you throw to someone who has fallen in the water, to prevent them from drowning 救生圈

ˈlife ˌbuoy nounChineseSyllable  

life buoy
ˈlife ˌbuoy noun [countable]

a large ring made out of material that floats, which you throw to someone who has fallen in the water, to prevent them from drowning