river blindness

同根派生

Another one is called trachoma, or river blindness.
这些都是喜人的战果，但还有更多的事情等着我们去做。
The area should be free of major environmental health hazards such as malaria, onchocerciasis (river blindness), schistosomiasis (bilharzia), or tsetse fly.
安置点必须远离重大的环境健康威胁：如疟疾、盘尾丝虫病(河盲症)、血吸虫病(比哈西亚症)或者采采蝇(睡病蝇)。
The river had worn a ravine between the hills.
那条河在两山之间已造成一个深谷。
Can we dredge the river to make it deeper?
我们能不能把这条河疏浚得深一点？
Navigation is difficult on this river because of the hidden rocks.
因为河上有暗礁，所以在这条河上航行很困难。