题目内容：

英语翻译
Some crabs are causing many problems for rivers and streams.People are worried.They are trying to find ways to get rid of them.
These crabs are said to be a special food in China.Some people think that they were brought from China to California about ten years ago.Since then there are many more of these crabs.
These crabs are making the sides of rivers and streams weak.This can be very dangerous.If the sides of the rivers and streams get too weak they can break and cause flooding.
People are trying to find ways to keep the crabs out of certain areas.They are using screens to do this.The screens are big enough to let fish through but small enough to block the crabs.
Other people are collecting the crabs.They want to learn more about them.They hope to find a way to keep them from having babies.

优质解答

一些螃蟹通常为一些江河和小溪带来麻烦.人们很着急.他们尝试摆脱螃蟹们的控制.
但是螃蟹被誉为中国的特色菜色之一.一些人认为螃蟹是在十年前被从中国带来加利福利亚的.虽然加利福利亚当时已经有很多螃蟹了.
这些螃蟹让一些江河和小溪的边缘变得非常脆弱,这将非常危险.如果这些江河和小溪的边缘变得越来越脆弱,它们将爆发和导致洪水.
人们尝试了许多将螃蟹挡在某些地方,他们用网去做这种工作.那些网足够大让鱼穿过,但对于螃蟹足够小而把它们挡住.
另一些人就着手收集螃蟹.他们想更加了解它们.他们希望能找到能让这些螃蟹减产的方法.
【完成!在下是用吃饭的时间去翻译的,望加分,报告完了】