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- retrogression of grasslands 草场退化
- The snowstorm swept the vast expanse of grassland. 暴风雪袭击了辽阔的草原。
- There is a reach of grassland in the distance. 远处是连绵一片的草原。
- An area of grassland unbounded by hedges or fences. 荒草地无栅栏或篱笆环围的草地
- In 2001, the number of grassland fire is 547. 2001年共发生草原火灾547起。
- In these conservation-conscious times, areas of grassland are no longer expendable. 在人们意识到应当保护自然资源的这个时代，草原已不容再受破坏了。
- More rainfall in the region of grasslands grass higher. 在降雨量较多的地区的草原的草较高。
- He looked ahead and saw a boundless stretch of grassland. 他放眼望去，只见一望无际的大草原。
- Influence of Overgrazing on Soil Erosion of Grassland. 过度放牧对草原土壤侵蚀的影响。
- Discussing on the way about sustainable development of grassland. 对草原可持续发展途径的探讨。
- Different degree retrogression of articulation-cartilage often occurs after the operation. 髌骨切除术治疗后,常发生不同程度的关节软骨退变;
- The moon's flame brightened the vast expanse of grassland. 月光照亮了广阔的草原。
- At first glance， it seems a retrogression of social civilization.By further analysis， it is not hard to see the social and economic reasons for it. 离婚率上升是一个社会现象，乍一看，这是社会文明的倒退，再一分析，则不难看出有其社会和经济原因。
- Of late years, however, concurrently with the retrogression of China and the advancement of Japan, Corea has lost her position in the race. 然而近年来，由于中国没落，日本崛起的情势，朝鲜夹在中间，显得格格不入。
- The world scale damage and retrogression of the coral reef have been in place for decades, especially the recent coral bleaching. 珊瑚礁生态系统有着很高的生物多样性和重要的生态功能。
- If China,with its one billion people,took the capitalist road,it would be a disaster for the world. It would be a retrogression of history,a retrogression of many years. 如果十亿人的中国走资本主义道路，对世界是个灾难，是把历史拉向后退，要倒退好多年。
- The cyclic sedimentation of the coal and oil shale was caused by changing subsiding rates of the basin, periodical aggression and retrogression of seawater. 这种基底沉降速率变化及周期性海水进退，是造成煤与油页岩呈旋回式沉积的主要原因。
- There are expanses of grasslands and deserts that have yet to be explored . 那边有待开辟的空阔的草地和戈壁。
- There are expanses of grasslands and deserts that have yet to be explored. 那里有待开发的广阔的草地和沙漠。
- In a long term, it is the unreasonable land use structure and extensive land management that cause the retrogression of the land qulity and the decrease of land output. 长期以来，由于国土观念的淡薄、土地经营方式的粗放、土地利用结构的不合理，致使土地质量下降，产出率低。
