所属栏目：英语短语用法辨析
①“结束广播;宣布广播结束”,指无线电或电视,非正式用法,不用进行时态:This Television Station begins to broadcast from dawn until it signs off at midnight.这家电视台从黎明开始广播,直至午夜结束。sign on②“结束写信”[英]:She signed off with “You ......（本文共 205 字 ） [阅读本文] >>
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