英汉互译“一直想弄明白的问题,原来在那么一刹那就明白了.”用英语怎么说?

题目

英汉互译“一直想弄明白的问题,原来在那么一刹那就明白了.”用英语怎么说?

答案

Have been thinking about the questions for a long time(have always been waiting for the answer on that question),but all the sudden I understood.