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| 41. | Under the direct leadership of the emperor and the ruling officials, the Yungang Grottos were constructed on a large scale and extend for about one kilometer from east to west. |
| 云冈石窟是由皇帝和上层统治阶级直接负责开凿的，其规模宏大 ，东西绵延一公里。 |
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| 42. | One clue to the origin of the peculiar shape of glacial valleys is the mechanisms by which glaciers carve valleys. |
| 探索冰川山谷的奇特形状起源的一种方法是研究冰川开凿山谷的机制。 |
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| 43. | These tiny debris-flow deposits formed on freshly excavated embankments of the California Aqueduct. |
| 这些细小的泥石流沉积是在新开凿的加利福尼亚渠的大堤上形成的。 |
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| 44. | On November 6th of that year,America announced its recognition of the Republic of Panama,and 12 days later signed with it a treaty allowing America to build the Panama Canal. |
| 同年11月6日，美国宣布承认巴拿马共和国； 12天后，同其签署了开凿巴拿马运河的条约。 |
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| 45. | The cement bridge passed by, and the muddy waters of the irrigation ditch from the days when the gringos diverted the river to bring it to the plantations. |
| 火车驶过水泥桥和浑浊的灌溉渠，那是当年外国佬开凿，用来引水灌溉种植园的。 |
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| 46. | Buddhists began to dig shallow caves (called grottoes) into cliffs or hillside during the 4th century. |
| 佛教徒们从公元4世纪开始，在岩边或山壁开凿洞窟，称作石窟。 |
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| 47. | And it is used successfully in shield tunneling, horizontal drilling, deep drilling, slotted walls and bore piles construction projects. |
| 主要应用于盾构隧道挖掘，水平钻孔，深层钻孔，开凿围墙和钻桩的建筑项目。 |
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| 48. | Ellora, with its uninterrupted sequence of monuments dating from A. |
| 高高的陡峭玄武岩壁上，34座洞穴庙宇被开凿出来，一座挨一座，延伸2000多米。 |
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| 49. | After this, he spent years begging for alms and then hewed out a cave shrine on Mount Sanwei. Thus was born the first cave shrine of Dunhuang. |
| 于是，他长年化缘募捐，在这里开凿了一个石窟，设置佛龛，敦煌第一座石窟寺乃应运而生。 |
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| 50. | It is actually connected with Asia at the spot where the Suez Canal was dug. Oceania is the smallest continent. |
| 它实际上是在开凿苏伊士运河的地方与亚洲相连.大洋洲是最小的洲. |
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