Michael was showing the nurse how to suction his saliva.迈克尔正给护士示范如何把他的唾液吸出来。He wiped a dribble of saliva from his chin.他擦掉了下巴上的几滴口水.Saliva dribbled from the baby's mouth.唾液从婴儿的嘴里流了出来....
Slow degradation of ground water quality may result from repeated use.循环使用地下水可以导致缓慢的水质降低.The point of degradation, due to attenuation or distortion, at which a signal becomes unusable.由于衰减或失真使得信号变得不能使用的那个退化点.Microbial de...
When life gets hard and you want to give up, remember that life is full of ups and downs, and without the downs, the ups would mean nothing.当生活很艰难，你想要放弃的时候，请记住，生活充满了起起落落，如果没有低谷，那站在高处也失去了意义。Jem was full of beans after a l...