交白卷jiāo báijuàn(～ㄦ{jiāo báijuànr}) 1.考生不能回答试题,把空白试卷交出去。{hand in a blank examination paper without answering any questions} 2.〈比喻fig.〉完全没有完成任务{utterly fail to complete a task}: 咱们必须把情况摸清楚,不能回去～。{We must find out how things stand here so we won't go back empty-handed.}