The tenons of the metal shelf are tightly connected.

这个金属支架接榫得严丝合缝.

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But this frame is not hermetically sealed.

但这个框架并非严丝合缝滴水不漏.

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The windows in his house fit together perfectly, and no loopholes can be found.

他家的窗户装得严丝合缝.

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The outcome suggests that there may be a chink in the armour of the export - control regime.

结果表明出口管控体制的盔甲并非严丝合缝.

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