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| 61. | We began our search in one of the world's most seismically active regions— the San Andreas Fault system that runs through California. |
| 我们从全世界地震最活跃的区域著手：绵亘美国加州的圣安地列斯断层系统。 |
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| 62. | Geographically, Jiangmen Municipality is located in an alluvial plain in river delta, with low hills dotted crisscrossed rivers and fertile soil. |
| 江门市属河流三角洲冲积平原，低山丘陵错落其间，河网纵横，土地肥沃。 |
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| 63. | The Great Wall, which snakes its way across more than6,400 km, receives an estimated10 million visitors a year, mostly to the mere10 km opened to tourists at Badaling, the nearest stretch to Beijing. |
| 长城蜿蜒绵亘长达六千四百公里，每年约有一千万名游客，大部分前往最靠近北京、仅十公里的八达岭段。 |
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| 64. | The presence of the Great Wall and the uncertainty about its extent added to the suspicion that the cosmological principle, and therefore our basic theoretical underpinning of the expanding universe, might be incorrect. |
| 长城的存在及其绵亘範围的不确定，使科学家开始怀疑宇宙学原理，而宇宙扩张的基础理论也很可能有误。 |
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| 65. | the hills, / Rock - ribbed, and ancient as the sun(William Cullen Bryant. |
| 山岩隐现的丘陵/如太阳一样古老（威廉 卡伦 布赖恩特）。 |
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| 66. | annual and perennial grasses of savannas and upland grasslands. |
| 一个一年或多年生禾草属，产于热带或亚热带稀树大草原及丘陵草原。 |
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| 67. | If the Highlanders can stop the Drillers, we're looking at overtime! |
| 如果丘陵者能成功的阻挡住钻工的话, 我们将进入加时。 |
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| 68. | Habitat and Ecology: In lowland broadleaved evergreen forest and fung shui wood. Flowering: late spring to early summer. |
| 生境与生态：生于丘陵和低山常绿阔叶林以及风水林中。花期：春末夏初。 |
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| 69. | Leveling hilly land into terraces, which slows the rate of runoff, allows more water to soak into the soil. |
| 把丘陵土地平整成为梯田，减慢水流速度，让更多的水渗到泥土里。 |
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| 70. | High-energy physicists have a new machine in mind: an unprecedented accelerator30 kilometers long that would offer a precise tool to explore some of the most important unanswered questions in physics. |
| 一条前所未有的加速器绵亘了30公里，它提供了精密的工具，可以探测物理学里最重要又悬而未决的课题。 |
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