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seal的一般过去时为：sealed...
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n.密封，印章，海豹，封条v.密封，盖章，决定，封上（信封）...
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The document was authenticated by a seal.文件有印鉴为凭....note paper bearing the Presidential seal...盖有总统印章的便笺Improved injector nozzles seal off better to keep the process leak - free and the molding operation dry.改进了的注射喷头密封更好...
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seal的第三人称单数（三单）为：seals...
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seal的音标：seal的英式发音音标为：[si:l]seal的美式发音音标为：[sil]...
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seal的现在进行时为：sealing...
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Soldiers there are going to seal the airport off.那里的士兵将封锁机场。The Redskins punted. Dallas then marched 79 yards to seal the victory.红人队选择了弃踢，达拉斯队随即跑出79码从而锁定胜局。Write your letter and seal it in a blank envelope.信写好后把它装进空白信封里...
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seal的现在完成时为：sealed...