Foods and fluids are mixed in the stomach by its muscular contractions.通过胃部肌肉的收缩食物和流质在胃中混合。He may suddenly take a dislike to foods that he's previously enjoyed.对以前爱吃的食物，他兴许突然就没了胃口。It is always important to choose en...
His research is for the betterment of mankind.他的研究是为全人类造福。Anyway, regardless of the resolution , we are all making a commitment toward betterment.不管怎么说, 别提决心, 我们都在保证朝着更好努力.I appreciate his many contributions to the bette...