请阅读翻译课本第四章词类与词义的调整，完成中译英练习（课堂讲解）
人类更长久的未来必须在太空中。在未来的几百年内，人类要想避免地球上的种种灾难将会变得非常困难，更不用说几千年或上百万年了。人类不应该把自己的“蛋”只放在一个篮子中，或者说一个星球上。愿我们在这一重负传播之前不会把篮子摔掉。I firmly believe/ I’m firmly convinced that the long-term future of the mankind/ human race must be in space. It will be difficult enough/ extremely difficult to avoid disasters on the Earth in the next hundreds of years, let alone/ not to mention the next thousands, or millions. The human race shouldn't have all its eggs in one basket, or on one planet. Let's hope we can avoid dropping/ we not drop the basket until we have spread the load.
I see great dangers/ hazards for the human race. There are a number of times in the past/ before/ previously when its survival have been uncertain/ insecure/ a question of touch and go/ when the chance for its survival is slim. The Cuban missile crisis in 1963 was one of/among these. The frequency of such occasions/ cases/ situations is likely to increase in the future. We shall need great care and judgment to negotiate them all successfully/ handle them through negotiation. If we can avoid disasters for the next two centuries, our species should be safe, as we spread into outer space.
If we are the only intelligent beings in the galaxy, we should make sure/ ensure we survive and continue. But we are entering an increasingly dangerous period of our history. Our population and our use of the finite/ limited resources of the Earth, are growing exponentially, along with our technical ability to change the environment continually. But our genetic code still carries the selfish and aggressive instincts that were of survival advantage/ in favor of survival in the past.
If we need to survive for long, we should spread out/ extend into space instead of
just remaining on the earth.
=Our only chance of long term survival is not to
remain inward looking on/ remain inward with an eye to the Earth, but to spread out into space.
We have made remarkable progress in the last/ past hundred years. But if we want to continue beyond the next hundreds of years, our future is in space/ should be in space.
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