翻译英语“他阻止弟弟进城的原因是是担心这个从未走出家门的农民”

the reason he prevented his younger brother from going to the town was that he worried about how could such a farmer who had never left home survive in the severe competition ?

His younger brother to stop because the city is worried that this has never been, how can farmers get out of the house in this town to survive the competitive "

The reason that he stops his little brother to go to city is that he worries about how to survive for the farmer who has never got out of his house in the city full of fierce competitive.
呵呵 可能这个句子的结构有点复杂

"His brother to prevent the reason is worried that never out of the farmer."