可耕地

Now in India, 63 percent of land is arable.

现在的印度，63%的土地是可耕地。

Do you know how much arable land there is in China?

你知道中国可耕地有多少吗？

India has more arable land than China.

印度拥有更多的可耕地比中国。

Brick for the past few years, China's average annual damage to 8000 hectares of arable land.

砖的过去的几年里，中国平均每年损失8000公顷的可耕地。

The northern half of China has less than 20 per cent of the nation's water, yet is home to more than 40 per cent of the population, much industry and over 50 per cent of arable land, according to dry-land farming expert Shan Lun, an academician of the Chinese Academy of Engineering.

中国工程院院士、旱地农业生理生态学家山仑说，华北拥有不到全国20％的储水量，却居住着超过全国40％的人口，是国家重要的工业基地，还拥有超过全国50％的可耕地。

What arable land occupies countrywide land area, land is fecund, rainfall is abundant.

可耕地占全国土地面积的50%，土地肥沃，雨量充沛。

In short , we must work diligently to make the world a better indefatigable resilience and achieve great success in both place for coming generations .

现在，中国面临的两大挑战是保持持续的经济增长和靠世界上仅仅百分之七的可耕地养活仍在增长的 12 亿人口。

Recently a report by food and agriculture organization of the U.N shows: population of the world is increasing rapidly and the plowland is reducing day by day.

联合国粮农组织最近进行的一项调查表明：世界人口正急剧增加，而世界可耕地数目却日益减少。

The rapid expansion of urban areas has in many cases encroached on valuable cultivatable land, and led to a general recognition that development must not be carried at the cost of agriculture.

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。

A UN environmental assessment of the country estimates that productivity could be doubled on the land currently farmed, while another 10% of Afghanistan (approximately 62,000 square kilometres, or 24,000 square miles) could be brought under the plough through irrigation.

根据联合国对阿富汗的环境评估，该国现时的可耕地的产量可以翻一倍，而另外10%的阿富汗土地（大约62000平方千米，或24000平方哩）可以通过建设灌溉系统而变成可耕地。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。