名词
中文翻译：船闸
同义词：
['boat lock', 'sluice gate']
例句：
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1. The boat block is acrucial part of the navigation system.
船闸是导航系统的关键部分。
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2. Theconstruction of the new boatblock has been delayed due toweather conditions.
由于天气条件，新船闸的建设被推迟了。
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3. The boatblock is used to control the flow ofwater during flood season.
船闸用于洪水季节控制水流。