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In the streets in public rest-rooms we can frequently find the marks of sputum. They are from some cool people’s casual spitting. These people not only spit casually in the streets but also do it in the dressingrooms office rooms or meeting rooms. It seems that they are not restricted by any people or any rules and they do not care whether it violates the social morality or not.

However they should realize that spitting casually is uncivilized and immoral. It is also a reflection of stupidity and lagging behind. In addition casual spitting does harm to public health. It can spread pathogen of infectious diseases and endanger other people’s health. The sputum on the ground will become dry and float with the dust into the air. When they are breathed into human body and pervade to a larger scope they will cause the transmitting of many diseases.

Now China is advocating the social morality construction. But casual spitting strongly violates the social morality and will influence our international image. No matter it is in the cities or in the country this kind of bad behavior should be completely stopped. And good habits should be fostered from childhood. So in order to protect Chinas international image and keep us healthy please do not spit casually!

在马路上，公共卫生间里，我们时常能发现痰的印记。它们是潇洒的人们随意吐在地上的，这些人不仅在街道上随意吐痰，就是在更衣室、办公室或者是会议室也随意吐痰。他们似乎不被任何人、任何条例所约束，也不在乎是否破坏社会公德。

但是，他们应该认识到，随地吐痰是不文明和不道德的行为，也是愚昧和落后的表现。而且，随地吐痰会破坏公共卫生、散布传染病的病原体，从而危害他人健康。吐在地面上的痰，干燥以后可随地面的扬尘漂浮于空气中，可被人吸入体内或随气流扩散至更广和更远的范围，所以它可以造成很多疾病的传染。

现在，中国正在提倡公民的社会公德建设，而随地吐痰是严重违背社会公德的，也更加影响了我们的国际形象。不管在城市还是在乡村，这种不道德的现象都应该杜绝。良好的习惯也应该从儿时抓起。所以为了维护我们的国际形象，保持我们的身体健康，请不要随意吐痰。