您要查找的是不是：
- The river has run dry. 这条河已经干涸了。
- The river has run over its banks. 河水已溢出了堤岸。
- The mountain spring has run dry. 这眼山泉干涸了。
- The river has scour out a passage in the sand. 这条河在沙土中冲出一条水道。
- Now, the wells have run dry, too. 现在，这里的水井也没水了。
- The river was beginning to run dry. 河水开始乾涸起来。
- The river has narrowed down over the past 20 years. 这条河在过去的二十年变窄了许多。
- The river has risen (by) several metres. 河水上涨了好几米。
- The river has three main branches. 这条河有三条主要的支流。
- The river has been polluted by waste products from the factory. 这条河已经受到工厂排放的废料的污染。
- The river had worn a ravine between the hills. 那条河在两山之间已造成一个深谷。
- The river has gone down to its usual level now that the floods are over. 洪水己经过去，所以河水又退到原来的高度。
- The river runs dry in the summer. 夏季河流的水变干了。
- The wells in most villages in the region have run dry. 这个地区多数村庄的水井都已干涸。
- The river has narrow down over the past 20 years. 这条河在过去的二十年变窄了许多。
- The river has flooded the meadows. 河水淹没了草地。
- The water in the river has fallen two feet . 河水下落两英尺。
- The campers were hard up for water because their well had run dry. 由于井枯了，露营者苦于缺水。
- The river has been defiled by waste from factories. 这条河流已经被工厂中的废物污染。
