他未经咀嚼就把食物咽下.He swallowed without chewing.她咽下了一粒梅核,几乎哽死.She swallowed a plum - stone and was almost chocked.我咬了一大块面包和奶酪，强咽下去之后开始说话。I bit into a hefty slab of bread and cheese. When I had got it down I started talking....
He unfastened the buttons of his shirt.他解开了衬衣纽扣.He once emerged from the toilets with his flies unfastened.有一次他裤链没拉就出了厕所。The buttons came unfastened.扣子松开了.Reaching down, he unfastened the latch on the gate...他伸手打开了门闩。...