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。
All else being equal, this means they must exploit larger areas of land than do agriculturalists to secure the same amount of food, clothing, and other necessities.
在其他条件相同的情况下，这意味着他们必须开拓出比农学家更大的土地面积，以获得相同数量的食物、衣服和其他必需品。
According to a report on UK food production from the University of Leeds, UK, 85 per cent of the country's total land area is associated with meat and dairy production.
据英国利兹大学的一份关于英国食品生产的报告称，该国85%的土地面积与肉类和奶制品生产有关。
When they do forage for food and for shelter materials, they have to leave their homes and go up on land where their main predators are.
当它们寻找食物和遮蔽物的时候，它们不得不离开家，到主要捕食者所在的陆地上去。
It's a product he believes could help solve future global food crises resulting from shrinking amounts of land available for growing meat the old-fashioned way.
他认为，这种产品可以帮助解决未来的全球粮食危机，粮食危机是由于用传统方式养殖肉类的土地面积减少而造成的。
Wasting food means losing not only life-supporting nutrition but also precious resources, including land, water and energy.
浪费食物不仅意味着失去维持生命的营养，还意味着失去宝贵的资源，包括土地、水和能源。
Expanding populations are subjecting the land to increasing pressures to provide them with food and fuel.
土地不断受到人口数量增加所带来的压力，这些增加的人口需要土地提供食物和养料。
One option for moving toward both biodiversity and terrestrial food supply goals is to produce greater yields from less land, thereby freeing land for conservation purposes.
实现生物多样性和陆地食物供应目标的一种选择是用更少的土地生产更高的产量，从而腾出土地用于保护目的。
"In Africa, women till the land and produce the bulk of the food, yet they have no understanding about marketing," Sadza said.
“在非洲，妇女种地并生产大部分的粮食，但是她们不懂营销。”Sadza说。
As in the sea, it seems that on the land one key food chain collapsed: the one with leaves as its basic raw material.
和在海洋中一样，陆地上一个关键食物链，一个以树叶为基本原料的食物链似乎也崩坏了。
This was an important discovery, because by learning to cultivate the land, and care for animals, mankind would always have food steadily.
这是一项重要的发现，因为通过学习耕作土地，饲养动物，就可以有稳定的食物来源。
The potential to provide 60-100% more food by simply eliminating losses, while simultaneously freeing up land, energy and water resources for other uses, is an opportunity that should not be ignored.
仅仅通过减少损失就有可能增加60%-100%的粮食供应，同时腾出土地、能源和水资源用于其他用途，这是一个不应被忽视的机会。
Green algae store food as starch, as do land plants and have cell walls made of cellulose, similar in composition to those of land plants.
绿藻以淀粉的形式储存食物，陆生植物也是如此，它们的细胞壁由纤维素构成，与陆生植物的细胞壁组成相似。
Farming the land for a whole day tired us out and made us realize that we should cherish food.
耕地一整天后我们疲惫不堪，也意识到我们应该珍惜食物。
There is no enough food on land to support so many bears.
陆地上没有足够的食物养活这么多熊。
People use more energy, water and land to raise animals for food than to grow fruit and vegetables.
人们使用更多的能源、水和土地来饲养动物作为食物，而不是用它们来种植水果和蔬菜。
But unlike biodiesels based on soya or other plants, it does not divert crops or land from food production into fuel production.
但是不像基于大豆或其他植物的生物柴油，他并不将农作物或土地从食品产品变成燃料产品。
With half of its agricultural land unproductive, Cuba imports 80% of its food.
由于其半数的农业用地产量不高，古巴要进口80%的食品。
At last all Wells were poisoned, all rivers ran with filth, all seas were dead; there was no land left to grow food.
终于，所有的井被下了毒，所有的河流载着污物流淌，所有的海洋死去；没有留下种植粮食的土地。
But also it's basically surviving three days out on the land with little food or water.
但这从根本上说是在陆地之外活上三天，而身边只有一丁点水和食物。
As long as energy prices remain high, biofuels will compete with food for land and water across the globe.
只要能源价格高居不下，在全球范围内，生物燃料的生产都会与粮食生产争水争地。
The expansion of agricultural land is destroying tigers' habitats and food supply.
农耕用地不断扩大，破坏了老虎的栖息地和食物来源。
They do not have land to grow food for their children.
他们没有土地为孩子们种植食物。
It is an established fact that, on average, it takes a significantly larger area of land to grow food for a meat-eating individual than for a vegetarian person.
一般而言，为供养一个食肉者而种植粮食所占土地的面积要明显大于一个素食主义者的，这是已定的事实。
Many countries cannot afford to divert land away from food production.
许多国家无法把土地从粮食生产转为生物燃料生产。
Raul is trying to cut food imports by leasing land to private farmers.
劳尔·卡斯特罗正尝试通过把土地租借给农民以减少食品进口。
Raul is trying to cut food imports by leasing land to private farmers.
劳尔·卡斯特罗正尝试通过把土地租借给农民以减少食品进口。
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