| 71. | By correlating markings made in various parts of the world, historians have been able to read this difficult code. |
| 历史学家通过把世界各地留下的这种痕迹放在一起研究，终于弄懂了这种费解的代码。
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| 72. | Since that time, various types of hovercraft have appeared and taken up regular service. |
| 从那以后，各种各样的气垫船出现了，并开始了定期航行服务。
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| 73. | He was the man who climbed the Leaning Tower of Pisa and dropped various weights from the top, who rolled balls down inclined planes, and then generalized the results of his many experiments into the famous law of free fall. |
| 他就是那个曾经爬上比萨斜塔，从塔顶向下抛掷积各种重物的人；他是那个使地球体沿斜面向下滚动，然后将多次实验结果概括成著名的自由落体定律的人。
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| 74. | Those planning a trip to remote areas, or intending to live in countries where drinking water is not readily available, should know about the various possible methods for making water safe. |
| 那些计划去偏远地区旅行，或在饮用水不现成的国家居住的人，应该知道如何使水适于饮用的各种办法。
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| 75. | One, for instance, consisted of rods of various lengths and thicknesses with would stand up end like ninepins. |
| 例如，有一种装置是由一些长短、粗细不同的木棒组成，就像九柱戏的木棒一样坚立着，
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| 76. | Figure 4.1 provides an overview of sectoral trade taxes and subsidies in various developing countries. |
| 图4.1提供了不同发展中国家的部门贸易税和补贴的概况。
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| 77. | There have been various attempts to remove this dualism, or make it more palatable. |
| 人们曾作出各种努力来消除这种二元论，或使它更合乎口味。
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| 78. | Are the stars in different parts of the diagram perhaps in various stages of development? |
| 在图中不同位置的恒星是否处于发展中的不同阶段?
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| 79. | Many leaders of government always go into raptures at the mere mention of artistic and cultural projects. They are forever talking about the nice parks, the smart sculptures in central city and the art galleries with various valuable rarities. Nothing, they maintain, is more essential than such projects in the economic growth. |
| 只要一提起艺术和文化项目，一些政府领导就会兴奋不已，他们滔滔不绝地说着美丽的公园，城市中心漂亮的雕塑，还有满是稀世珍宝的艺术展览馆。他们认为在经济发展中，没有什么比这些艺术项目更重要了。
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| 80. | Many young people always go into raptures at the merely mention of buying fashion clothes. And they seem to be attracted by colorful material, various styles of fashion clothes. |
| 许多年轻人一提到时尚服装就兴高采烈。他们似乎被时尚服装那多彩的面料，各种不同的款式所吸引。
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