名词
中文翻译：浮标
同义词：
['buoy', 'float', 'buoyancy']
例句：
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1. The boat was anchored to a buoy in the harbor.
这艘船被锚定在港口的一个浮标上。
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2. The buoy was used to guide ships through the shallow waters.
这个浮标用来引导船只通过浅水区。
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3. The buoy was designed to keep the ship from drifting too far away from the shore.
这个浮标设计用来防止船只偏离岸边太远。