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①我们必须强调空间计划对解决世界面临的最大问题所能作出的贡献。除了核武器造成的大破坏以外,这个最大的问题就是人口爆炸。我们手头有使人信服的证据说明,空间计划未来的重大贡献之一将是帮助更加有效地管理世界资源的利用。②让我们看看原始事实吧:从耶稣降生到1700年,世界人口增加一倍。1700年至1900年又翻了一番。根据联合国粮食及农业组织的最新统计资
1 We must emphasize the contribution that space planning can make to solving the biggest problems facing the world. In addition to the major damage caused by nuclear weapons, the biggest problem is the population explosion. We have convincing evidence at hand that one of the major contributions of the space program in the future will be to help manage the use of world resources more effectively. 2 Let us look at the original facts: From the birth of Jesus to 1700, the world’s population has doubled. From 1700 to 1900, it has doubled again. According to the latest statistics of the Food and Agriculture Organization of the United Nations