短语词组短语Please back the check 请在支票上背书back a check 背书支票;负责付款;翻译back fire check valve 逆火止回阀back -check condition 检核条件to back a check 背支票;详细翻译;背书支票Electronization back -check 电子化检查telephone back -check 电话覆检 返回 back check