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wAtErtight BulkhEAD

watertight 英[ˈwɔ:tətaɪt] 美[ˈwɔ:tərtaɪt] adj. 无懈可击的; 水密的; 不漏水的; 防渗的; [网络] 不漏水; 严密的; 不透水的; [例句]The flask is completely watertight, even when laid on its side....

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