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更新日期:2026-08-14
under ˈseal(formal)(of a document文件)in a sealed envelope that cannot be opened before a particular time密封;加盖印信under seal盖上公章的:Their credentials have been under seal,they can identify them anywhere they go.他们的证件已经盖上公章,无论他们走到哪里,它都可以证明他们的身份。