| 71. | It is impossible to too highly honor him for what he has done. |
| 对他所做的事，无论给予怎么样高的荣誉也不过分。
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| 72. | When he died, however, his brothers found it impossible to keep the secret any longer. |
| 他死后，他的弟弟们才觉得无法再保守这个秘密了。
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| 73. | Dentists always ask questions when it is impossible for you to answer. |
| 牙科医生们总是在你无法作出回答的时候向你提出问题。
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| 74. | Just as it was leaving, Mr. Taylor rushed out and ran after it throwing ashtrays and vases, but it was impossible to stop the thieves. |
| 就在轿车离开的时候，泰勒先生从店里冲了出来，跟在车后追赶，一边还往车上扔烟灰缸、花瓶。
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| 75. | The Cutty Sark rolled from side to side and it became impossible to steer her. |
| 船身左右摇晃，无法操纵。
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| 76. | Though the new rudder was fitted at tremendous speed, it was impossible for the Cutty Sark to win. |
| 尽管换装新舵时分秒必争，但“卡蒂萨克”号已经不可能取胜了，
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| 77. | No matter how hard I tried, it was impossible to fill this beautiful pen with ink and to this day it has never written a single world! |
| 然而不管我如何摆弄，那枝漂亮的钢笔就是吸不进墨水来。直到今天，那枝笔连一个字也没写过！
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| 78. | It is impossible to give a satisfactory explanation for a pot-holer's motives. |
| 要想对洞穴探险者的动机作出满意的解释是不可能的。
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| 79. | Precautions of this sort are necessary, for it is impossible to foretell the exact nature of the difficulties which will confront the pot-holer. |
| 作出这样的准备是必要的，因为无法预见到洞穴探险者究竟会遇到什么性质的困难。
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| 80. | The sides of the dish were so smooth that it was almost impossible to attach hawsers and chains to the rim without damaging it. |
| 盘子四边十分光滑，要在盘边拴上绳索或链条而同时又不损坏它是很难办到的。
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