| 11. | The development of such a telescope will be one of the great astronomical projects of the twenty-first century. |
| 而开发这样一台望远镜将会是21世纪天文学的一个重要的研究课题。
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| 12. | Our own warm atmosphere and the heat generated by the telescope would make it impossible to detect objects as small as planets. |
| 地球周围温暖的大气层和望远镜散出的热量使得我们根本不可能找到比行星更小的物体。
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| 13. | Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles iron solar system. |
| 即使是一台放置在围绕地球的轨道上的望远镜——如非常成功的哈勃望远镜——也因为太阳系中的尘埃微粒而无法胜任。
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| 14. | A telescope would have to be as far away as the planet Jupiter to look for life in outer space, because the dust becomes thinner the further we travel towards the outer edges of our own solar system. |
| 望远镜要放置在木星那样遥远的行星上才有可能在外层空间搜寻生命。因为我们越是接近太阳系的边缘，尘埃就越稀薄。
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| 15. | But can we blame those who looked and failed to see what Galileo saw, if we remember that to use a telescope at the limit of its powers calls for long experience and intimate familiarity with one's instrument? |
| 但是，如果我们想到，便用一架倍数有限的望远镜需要长期的经验和对自己仪器的熟悉程度，那么我们怎么能去责备观察了天空但没有看到伽利略所看到的东西的那些人呢？
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| 16. | Was the philosopher who refused to look through Galileo's telescope more culpable than those who alleged that the spiral nebulae observed with Lord Rosse's great telescope in the eighteen-forties were scratches left by the grinder? |
| 某位哲学家曾拒绝使用伽利略的望远镜去观察天空；到了19世纪40年代，有人硬把罗斯勋爵高倍望远镜观测到的螺旋状星云说成是磨镜工留下的磨痕。
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| 17. | He had been the first to turn a telescope to the sky, and he had seen there evidence enough to overthrow Aristotle and Ptolemy together. |
| 他是第一个把望远镜对准天空的人，观察到的论据足以把亚里士多德和托勒密一起推翻。
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| 18. | He is at his telescope . |
| 他在用望远镜观察。
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| 19. | If the moon be looked at through a telescope lofty mountains and deep valleys may be seen. |
| 如果用望远镜观察，可以看到月球上有高山和深谷。
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| 20. | a rest for a billiard cue, telescope , telephone receiver |
| 台球杆的搁架, 望远镜的支架, 电话听筒的托架
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