| 51. | Since its discovery , it has become a sort of potholers' Everest. |
| 自从被发现以后，这个洞成了洞穴探险者的珠穆朗玛峰，
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| 52. | Then a police inspector arrived with a constable and she told them of her discovery of the ransacked flat. |
| 过了一会儿，一位巡官带着一名警察来了。她向他们讲述了发现公寓遭劫的经过。
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| 53. | Not all sounds made by animals serve as language, and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role. |
| 动物发出的声音不都是用作语言交际。我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。
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| 54. | She was not there, and the discovery gave him a pang out of all proportion to its seriousness. |
| 他发觉她不在场时所感到的失望与事态的严重性远远不能相比。
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| 55. | Atomic energy is a great discovery of the present century, and many people have played a part in its development. |
| 原子能是本世纪的一大发现。许多人为原子能的发展贡献了力量。
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| 56. | To him I owe the discovery that even very short periods of time add up to all useful hours I need, if I plunge in without delay. (Johm Erskine, American educator) |
| 感激他使我 发现即使是很短的时刻，只要我分秒必争的一头钻进工作，积累起来就成为我需要的特别有用的几个钟头。(美国教育家 厄斯金.J.)
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| 57. | His discovery will ever be thought to be of great importance. |
| 他的发现将永远被认为是具有重要意义的。
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| 58. | His discovery was no more an accident than is any other discovery. |
| 他的发现与任何其他发现一样都不是偶然的事。
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| 59. | The discovery of gold put our town on the map. |
| 发现黄金使我们镇出了名。
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| 60. | The discovery of penicillin was a monument in medical research. |
| 青霉素的发现是医学研究上的不朽功业.。
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