Better irrigation can dramatically improve crop yield and about 40% of the world's food supply is currently derived from irrigated land.

更好的灌溉可以显著提高作物产量；目前，全球约40%的粮食供应都来自于灌溉地。

Finally, the growing population was probably fed by increasing the number and size of irrigated fields.

最后，持续增加的人口很可能是通过不断扩大灌溉土地的面积和规模而得到食物供应的。

They irrigated their crops with water from this river.

他们用这条小河里的水浇庄稼。

Only 4% of the continent's farmland is irrigated.

整个非洲大陆上只有4%的土地得到灌溉。

Only 17% of all the world's agricultural land is irrigated.

全世界农耕地只有17%得到灌溉。

If the eye is affected, it should be irrigated thoroughly.

如果眼睛受影响，应该进行彻底冲洗。

The Mekong River provides fertile, irrigated fields for rice production.

湄公河为水稻种植生产提供了肥沃的可灌溉土地。

The reason water matters so much is that irrigated farming is so productive.

水之所以这么重要的原因是，灌溉的田地产量高。 虽然只占世界总耕地的五分之一，但是生产了世界粮食的五分之四。

Over half of world's food comes from rain-fed farms, as opposed to irrigated ones.

世界粮食一半以上来自依靠雨水而非依靠灌溉的农田。

At the moment, about 2% of irrigated water is used to grow crops for energy, or 44km3.

目前，灌溉水源大约有2%用于能源作物，亦即44公吨；

On a mild late spring day Akbar irrigated a small plot of wheat just outside the village.

晚春和煦的一天，阿巴克在村外灌溉一小块小麦地。

At the moment, about 2% of irrigated water is used to grow crops for energy, or 44km3.

眼下用来培养能源作物约占灌溉水的2%，也就是44立方千米。

An ample water supply is probably the greatest advantage of soil submergence for irrigated rice.

大量供水可能对灌溉水稻淹水土壤有很大好处。

Irrigation may not help: climate change will hit irrigated systems harder than rain-fed ones.

灌溉也没用：气候变化对人工灌溉区比雨水浇灌区的打击更大。

Ethiopia now has just 39km of roads per 1,000 sq km, and less than 4% of its land is irrigated.

埃塞俄比亚目前每1000平方公里有39公里的路，不到4%的土地得到灌溉。

Ethiopia now has just 39km of roads per 1, 000 sq km, and less than 4% of its land is irrigated.

埃塞俄比亚目前每1000平方公里有39公里的路，不到4%的土地得到灌溉。

This is a smooth, slowly rising area that has many fertile valleys and is irrigated by many waterways.

这是一个平坦的逐渐上升的地带，拥有许多富饶的山谷，并且由很多水路进行灌溉。

It is the least irrigated and electrified, yet it USES only 3% of its renewable water, against 52% in South Asia.

它的灌溉率及电气化程度均为全球最低，仅3%的再生水资源得到利用，反观南亚，再生水资源的利用率高达52%。

Australia's biggest river system is Shared by four states and feeds two-thirds of the country's irrigated farmland.

澳大利亚最庞大的水系遍布四个州，哺育着这个国家三分之二的农田。

This is all reassuring—until you remember that irrigated agriculture accounts for 70 percent of the fresh water used by humans.

这些都很令人欣慰，不过你应该知道，农业灌溉消耗的水量占到了人类总耗水量的70%。

His plot near the Banks of the Yangtze River in China's eastern Anhui province is irrigated by the run-off from a large paper mill.

他的菜地位于中国东部安徽省的长江堤岸附近，灌溉水源是一座大型造纸厂排放的污水。

Uzbekistan is a dry, doubly landlocked country in Central Asia, of which 10% consists of intensely cultivated, irrigated river valleys.

乌兹别克斯坦位于中亚 ，是一个干旱的双重内陆国家，10%的地区有密集的耕地、水渠和山谷。

A few days ago I thought the watermelon should be irrigated. When I was on the way to the field I saw a piece of dirty rope by the pine.

几天前我在街上走的时候，看到一根脏绳子，以为没人要了，便捡起来带了回家。

Our studies have found that local rice production under irrigated conditions can be as competitive as in Asia and much cheaper than in the USA.

我们开展的研究发现，地方灌溉水稻生产的竞争力与亚洲相同，生产成本比美国要低得多。