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.