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12. 城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。政府更加重视这个问题，越来越多的不必要的工程被终止。 The rapid expansion of urban areas has in many cases encroached on valuable cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture . The government has attached greater importance to the problem and an increasing number of redundant projects are being terminated . 13. 世界上越来越多的人认识到加强环境保护的必要性。 There is a growing worldwide awareness of the need for strengthened environmental protection. 14. 越来越多的人开始意识到财富不是幸福的惟一先决条件。 A growing number of people are beginning to realize that wealth is not the sole prerequisite for happiness . 15 . 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。 Why do some governments persist in spending billions of dollars on space exploration when starvation and poverty continue to grip many countries throughout the world? This particular question is being raised by an ever increasing number of people. | 
