名词
中文翻译：密封性
同义词：
['waterproof', 'impermeable']
例句：
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1.The new product has a water tightness that meets the industry standards.
新产品具有水密性，符合行业标准。
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2. The waterproof jacket is designed to protect against rain and snow.
防水夹克设计用来抵御雨水和雪。
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3.The construction of this bridge was made to ensure water tightness during flood conditions.
这座桥梁的建设旨在确保在洪水条件下的防水性能。