名词
中文翻译：浮标
同义词：
['buoy', 'float', 'buoyancy例句：1. The boat was anchored to a buoy in the middle of the lake.（这艘船被锚在湖中央的一个浮标上。）']
例句：
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1. The boat was anchored to a buoy in the middle of the lake.
这艘船被锚在湖中央的一个浮标上。
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2. The buoy was used to guide ships through the fog.
这个浮标用来引导船只穿过雾。
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3.The buoy was visible from the shore, indicating that the ship was safe.
这个浮标从岸上可见，表明船只是安全的。