名词
中文翻译：Unknown
同义词：
['导航标志，导航浮标，导航标记，导航浮标，导航标志']
例句：
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1.The navigational buoys are used to guide ships safely through the harbor.
导航浮标用于引导船只安全通过港口。
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2.The navigational buoys were placed at strategic locations along the coast to assist in navigation.
在海岸沿线的战略性位置放置了导航浮标以协助导航。
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3.The navigational buoys have been replaced with more advanced technology to improve accuracy and reliability.
已采用更先进的技术替换导航浮标以提高准确性和可靠性。