译：随地吐痰是一种缺少社会公德的行为,我们应改掉坏习惯养成好习惯,从身边的小事做起提高道德素质.译

Spitting casually everywhere is a behavour neglectfull of social morality.we should get rid of such bad habits and form better ones ,then to raise our level of morality from doing everything minor.