Why do some governments persist in spending billionsof dollars on space exploration when starvation and poverty continue to gripmany countries throughout the world ? This particular question is being raisedby an ever increasing number of people 。
既然世界上许多国家仍被饥饿和贫困所困扰，为什么有的政府还坚持花费数十亿美元用于太空探索?现在越来越多的人提出这个问题。
We must seek immediate solutions for problems leadingto the rapid depletion of the earth's ozone layer . If allowed to proceedunchecked , the problem will undoubtedly exacerbate global
