1. Such a problem has never arisen within my recollection.
    我不记得有过这样的问题.

2. So the problem now is not why I should study English, but how to get the best results in the shortest possible time.
    现在的问题不是我为何要学英语，而是怎么能在尽可能短的时间内学得最好。

3. So you see, Mark's color is not the problem. My biggest worry is that you may be marrying Mark for the same wrong reasons that I married your father.
    因此要明白，马克的肤色不是个问题。我最大的担心的是你也许跟我当初嫁给你爸爸一样，是因为错误的原因而嫁给马克的。

4. She was supposed to notify the medical worker, who would certify that there was a problem.
    她该通知医务人员，由他来证明问题确实存在，

5. Public transport is a big problem in this locality.
    公共交通是这个地区的大问题。

6. People are always talking about ´the problem of youth´.
    人们总是在谈论"青年问题"。

7. Perhaps it will solve my problem, but I just haven´t had time to read it!
    也许这本书能解决我的问题，但我一直还没时间去看这本书！

8. Professor Michael Barber of London University said pupils could spend half their time at school, half at home as a way to solve this problem.
    伦敦大学的迈克尔·巴伯教授说，为了解决这个问题，学生可以一半时间待在学校，一半时间待在家里。

9. Unfortunately, there is frequently a great interval between knowing how to solve a problem and finding the resources to solve it.
    不幸的是，从知道怎样解决问题到准备充足的人力物力去解决它，两者之间还有很大的差距。

10. Rubbish, however, is only part of the problem of polluting our planet.
    然而，垃圾只是我们这个星球的污染问题的一个方面。