求翻译：综上所述，密西西比河是美国的父亲河，同样，长江也是中国的父亲河。两个国家的历史文化都是在河的两岸发展而来。所以这两条河对两个国家的历史发展都有着重要的作用，对于文化也有着重要的影响。沿岸的城市也正是因为河的依靠才发展迅速。然而，不同的是，密西西比河依然保持天然无污染的状态。而中国的长江则面临着环境污染问题，大量污水倾倒在河水中使河水受到侵害。所以，我们要保护水资源。保护我们的父亲河就是保护我们自己是什么意思？

In summary, the Mississippi River is the father of the river, the same, the father of the river Yangtze is also China. History and culture of the two countries are developed from both sides of the river. The historical development of the two rivers of the two countries plays an important role also h

As mentioned above, the United States is the Mississippi River's father, the same river, the Yangtze River is China's father. Two in a historical and cultural are on both sides of the River development. Therefore, the two rivers in the two countries' historical development is an important role to pl

To sum up, the Mississippi River is the United States's fathers rivers, as well as fathers rivers of the Yangtze River in China. History and