stay behind

remain at a place after others have left (esp to go home) （别人走後）在某处留下不走（尤指暂不回家）: They stayed behind after the party to help clear up. 聚会结束之後, 他们留下来帮助收拾东西. * The teacher told him to stay behind after class. 老师要他下课後先别走. stay down (a) (of food) remain in the stomach (rather than be vomited) （指食物）留在胃里（不呕吐出来）: She's so ill that nothing will stay down, not even water. 她病得很重, 吃什麽都吐出来, 连喝水都吐. (b) remain in a lowered position 停留在较低的位置: The switch on the kettle won't stay down. 这个水壶上的开关按下时卡不住了.

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