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| 71. | With a big flow rate, it is suitable for the use of plain river network area and hilly irrigation and drainage, piscina water supply and drainage industrial water supply and drainage. |
| 本产品流量大，适用于平原河网地区和丘陵灌区，特别适用于农田排灌、鱼塘供排水及工业供排水。 |
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| 72. | In its middle and east is the Huang-Huai-Hai alluvial plain, and in its southwest is the Nanyang Basin. |
| 在全省面积中，山地丘陵面积7.4万平方公里，占全省总面积的44.3%；平原和盆地面积9.3万平方公里，占总面积的55.7%。 |
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| 73. | In front of them, the mountains tapered into hills for several miles before the rocky soil surrendered to the trees of a dense forest. |
| 在他们前面，山脉渐缩为丘陵，绵延数英里，直到岩石泥土向茂密的森林认输。 |
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| 74. | The remains of the19 th-century coffee plantations in the foothills of the Sierra Maestra are unique evidence of a pioneer form of agriculture in a difficult terrain. |
| 这个座落丘陵间的19世纪咖啡种植园是在陌生土地上进行先锋式的新作物种植尝试范例。 |
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| 75. | China has an immense territory totaling9.6 million square kilometers. On this vast area of land, there are high mountains, long rivers, undulating hills, boundless plains and fertile basins. |
| 中国地域辽阔，960万平方公里的土地上高山耸峙，大河奔流，湖泊如境，丘陵起伏，平原无垠，盆地肥沃。 |
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| 76. | Therefore, China's rural poor are mostly concentrated in the central and western regions, especially in the western region, living in scattered areas in deserts, hills, mountains and plateaus. |
| 与此相关，中国农村贫困人口的绝大多数集中在中西部，尤其是西部，并呈块状、片状分布在高原、山地、丘陵、沙漠等地区。 |
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| 77. | The results show that the techniques of farming and cultivation play an important effect on soil and water erosion and crop yield on yellow sloping field( gradient11～13°). |
| 结果表明:黔中黄壤丘陵旱坡地（度11～3°不同耕作栽培技术对水土流失及作物产量影响极大。 |
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| 78. | The Construction Term : The Shawan is 618 square kilometers, mountainous area accounts for 68.2%, the knoll area accounts for 17%, massive mountainous areas are in elevation 800 - 2,000 meters. |
| 建设条件：沙湾区幅员面积618平方公里，其中山区面积占68.2％，丘陵面积占17％，大量山区面积在海拔800－2000米。 |
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| 79. | Whittled by a half million years of wind and rain, the haunting claystone hills and buttes of Badlands National Park rise above the surrounding sea of grasslands. |
| 历经了50万年的风吹雨打后，恶地国家公园的黏土岩丘陵与孤山矗立在一片草原之海中。 |
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| 80. | Switzerland's heavily forested hills and mountain slopes provide timber for use in its traditional clock-making and furniture industries, and also for paper pulp. |
| 瑞士的丘陵和山坡上的茂密的林木，为传统的钟壳和家具制造业，以及纸浆提供了原材料。 |
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