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翻譯解釋
envelop的英語：vt.1.包，封；蔽。2.【軍事】包圍。短語和例子an enveloping attack 包圍攻擊。 be enveloped in 被包圍在。 envelop oneself in a blanket 包在毛毯中。n.＝envelope.n.-ment 1.封，包，包圍。2.封皮，封套。
