life buoy
短语救生圈
词形变化
life buoys
复数
别名
life-buoy
释义与例句
n.
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1.
A buoyant object (most commonly torus-shaped) that is used as a life-saving device by keeping a person afloat.
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2.
Something that rescues one from difficulties.
比喻
词汇关系
词源
From life + buoy.
来源:wiktionary