| 21. | A tunnel pierces the mountain. |
| 一条隧道穿过此山。
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| 22. | The train passes [goes] through a tunnel . |
| 火车通过一隧道。
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| 23. | The tunnel possesses some novel features. |
| 这个隧道具有一些新颖的特点。
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| 24. | In 1858, a French engineer, Aime Thome de Gamond, arrived in England with a plan for a twenty-one-mile tunnel under the English Channel. |
| 1858年，一位名叫埃梅.托梅.德.干蒙的法国工程师带着建造一条长21英里、穿越英吉利海陕的隧道计划到了英国。
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| 25. | The tunnel would be well-ventilated if tall chimneys were built above sea level. |
| 隧道就具备了良好的通风条件。
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| 26. | This would solve the problem of ventilation, for if a train entered this tunnel , it would draw in fresh air behind it. |
| 因为如果有列火车开进隧道，它就把新鲜空气随之抽进了隧道。
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| 27. | Forty-two years later a tunnel was actually begun. |
| 42年以后，隧道实际已经开始建了。
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| 28. | The world had to wait almost another 100 years for the Channel Tunnel . |
| 世界不得不再等将近100年才看到海峡隧道竣工。
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| 29. | Now that a tunnel ahs been built through the mountains, the Pass is less dangerous, but each year, the dogs are still sent out into the snow whenever a traveller is in difficulty. |
| 如今由于山里开挖了隧道，翻越山口已不那么危险了。
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| 30. | Despite the new tunnel , there are still a few people who rashly attempt to cross the Pass on foot. |
| 但每年还要派狗到雪山地里去帮助那些遇到困难的旅游者，尽管修通了隧道，但仍有一些人想冒险徒步跨越圣伯纳德山口。
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