relays [ˈri:leiz]

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附加级

v.转述( relay的第三人称单数 )；转达

New relays of troops were sent to the battle front. 新补充的部队已送往前线。来自辞典例句
His questioners worked on him in relays. 审讯人员轮流对他进行审讯。来自辞典例句