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英语 词库
advance guard [əd'vɔ:nsgɔ:d]
军队, 后勤	Close security detachment sent ahead of a marching troup to provide it with intelligence, to cover it and to facilitate its engagement. (FRA)
美国	Detachment sent ahead of the main force to ensure its uninterrupted advance; to protect the main body against surprise; to facilitate the advance by removing obstacles and repairing roads and bridges; and to cover the deployment of the main body if it is committed to action (JP 3-07.2)

advance: 62 短语, 10 学科

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