名词中文翻译
中文翻译：内封
同义词：
['inner closure', 'inner lock']
例句：
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1.The inner seal of the door prevents insects from entering.
门的内密封阻止了昆虫进入。
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2.The inner seal of the envelope is crucial for security.
信封的内密封对于安全性至关重要。
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3. The inner seal was broken during the earthquake, allowing water to flood the house.
地震期间，内密封被破坏，导致水涌入房屋。