The students were all waiting expectantly with grins on their faces.学生都含笑期待着.He grins, delighted at the memory.想到往事，他开心地咧嘴笑了起来。The very few who knew exchanged celestial grins.了解内幕的很少几个人只好招以会心的微笑....
迈克尔正给护士示范如何把他的唾液吸出来。Michael was showing the nurse how to suction his saliva.唾液顺着他的下巴流下来。Spittle oozed down his jaw.唾液从婴儿的嘴里流了出来.Saliva dribbled from the baby's mouth....