名词
中文翻译：救生圈
同义词：
['lifebuoy', 'lifebelt例句：1. The swimmer swam to the shore with Plimsoll in hand.（游泳者手拿救生圈游到了岸边。）']
例句：
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1. The swimmer swam to the shore with Plimsoll in hand.
游泳者手拿救生圈游到了岸边。
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2.The boat was anchored safely with Plimsoll around it.
船被安全地用救生圈围住锚定。
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3. Before the storm, everyone had a Plimsoll on board.
暴风雨来临之前，每个人都在船上系着救生圈。