A lot of our land is used to grow crops for export.
我们很多的土地用来种植出口作物。
A laser thunder factory could shake the moisture out of clouds, perhaps preventing the formation of the giant hailstones that threaten crops.
激光雷击工厂可以把云中的水分震出来，也许可以阻止威胁农作物的巨型冰雹的形成。
In modern agriculture, mineral depletion of soils is a major concern, since harvesting crops interrupts the recycling of nutrients back to the soil.
在现代农业中，土壤的矿物损耗是一个主要的问题，因为收割农作物会中断养分的循环，使其无法重新回到土壤中。
The proposed areas of the domestication of African crops lie in a band that extends from Ethiopia across southern Sudan to West Africa.
非洲作物驯化的建议区域位于一条从埃塞俄比亚、苏丹南部到西非的带状地带。
Some species of tree have been read out of the party by economics-minded forestersbecause they grow too slowly, or have too low a sale vale to pay as timber crops.
有些种类的树木已经被有经济头脑的林农淘汰出局，因为它们生长得太慢，或者作为木材作物的售价太低。
Some species of tree have been 'read out of the party' by economics-minded foresters because they grow too slowly, or have too low a sale value to pay as timber crops.
有些种类的树木已经被有经济头脑的林农淘汰出局，因为它们生长得太慢，或者作为木材作物的售价太低。
But this isn't a long paper, so are you going to need to pick a specific area of pre-modern agriculture, like irrigation or food crops of ancient Greece.
但这不是一篇很长的论文，所以你要选定一个现代以前农业的特定领域，像是灌溉技术，或古希腊的粮食作物。
Genetic engineering also may provide a partial solution, as new strains of drought-resistant crops continue to be developed.
随着抗旱作物新品种的不断开发，基因工程也可能提供部分解决方案。
Once Farrant and her colleagues feel they have a better sense of which switches to throw, they will have to find the best way to do so in useful crops.
一旦法兰特及其同事觉得她们对打开哪个开关有更好的认识，她们就得找到在有用作物上如此做的最佳方法。
They serve as a natural fertilizer and help support the roots of future crops.
它们起到天然肥料的作用，帮助为未来作物的根系提供养分。
I also spent a lot of time looking after my corn and rice crops.
我还花了很多时间照顾我的玉米和水稻作物。
The other thing is that in some countries, the way that biofuel crops are grown and harvested still produces a great deal of pollution—really damaging to the atmosphere.
另一件事是，在一些国家，生物燃料作物的种植和收获方式仍然会产生大量的污染——这些污染对大气造成真正的破坏。
Once the idea of planting diffused, Africans began to develop their own crops, such as certain varieties of rice, and they demonstrated a continued receptiveness to new imports.
一旦种植的想法传播开来，非洲人就开始培育他们自己的农作物，例如某些品种的水稻，他们对新进口的作物表现出持续的接受能力。
In addition to dairy farming and cultivating industrial crops, a third sector of the Dutch economy reflected the way in which agriculture was being modernized—horticulture.
除了奶牛养殖和工业作物种植，荷兰经济的第三部分反映了农业现代化的方式——园艺。
There is a good reason why the UK is dominated by animal husbandry: most of its terrain doesn't have the right soil or climate to grow crops on a commercial basis.
英国畜牧业占大头是有充分理由的：其大部分地区的土壤或气候不适宜农作物商业化种植。
To supporters, GM crops are a key part of the effort to sustainably provide food to meet a growing global population.
为满足日益增长的全球人口需求，需要付出努力，持续地提供粮食。对于支持者来说，转基因作物是这一努力的一个关键部分。
Afterwards during the season of subsidence, the water would subside, or recede, revealing a new layer of fertile black silt and allowing for the planting of various crops.
在随后的沉降季节，水会退去，并露出一层新的肥沃的黑色淤泥，可以在这上面种植各种作物。
Most of all, though, I wish a tenth of the energy that's spent endlessly debating GM crops was focused on those more pressing challenges for global agriculture.
然而，最重要的是，我希望把花费在无休止争论转基因作物上的十分之一的精力集中到全球农业面临的更紧迫的挑战上。
Other machines would distinguish problem weeds from crops and eliminate them with shots from high-power lasers or a microdot of pesticide.
其他的机器将有问题的杂草从农作物中区分出来，然后用高能激光照射或农药微粒来消灭它们。
People use fertilizer for their crops and plants and a lot of it eventually makes its way from land into the seas.
人们用化肥来种植庄稼和植物，很多化肥最终会从陆地流入海洋。
A variety of other crops, including oranges and tomatoes destined to become processed foods, are also picked mechanically, albeit to a slightly lesser extent.
其他多种作物，包括注定要成为加工食品的橙子和西红柿，也都是机械采摘的，尽管使用机械的程度略低。
The continuous and reckless use of synthetic chemicals for the control of pests which pose a threat to agricultural crops and human health is proving to be counter-productive.
为控制害虫，人们持续且不计后果地使用人工合成化学品，对农作物和人类健康造成危害，事实证明会产生相反的效果。
Modern irrigation devices, each capable of spraying 4,5 million liters of water a day, have produced a landscape dominated by geometric patterns of circular green islands of crops.
现代灌溉设备每台的日喷水量可以达到四百五十万升，从而形成了一种像群岛一样的由几何圆形的绿色农田所构成的景观。
Modern irrigation devices, each capable of spraying 4.5 million liters of water a day, have produced a landscape dominated by geometric patterns of circular green islands of crops.
现代灌溉设备，每台的日喷水量可以达到四百五十万升，从而形成了一种像群岛一样的由几何圆形的绿色农田所构成的景观。
She handled their crops, and knew what they had eaten; her face enacted a vivid pantomime of the criticisms passing in her mind.
她摸摸它们的嗉囊，就能知道它们吃了什么；她的脸扮演的是一出生动的哑剧，内心流露的种种批评都从脸上显现出来。
The south of China suffered a heavy rain which killed 44 people, made 21 missing and hurt a large area of crops.
中国南方遭受了一场大雨，导致44人死亡，21人失踪，大片庄稼受损。
The south of China suffered a heavy rain which killed 44 people, made 21 missing and ruined a large area of crops.
中国南方遭遇暴雨，造成44人死亡，21人失踪，大面积农作物被毁。
A lot of crops were damaged by the frost.
许多农作物被霜冻坏了。
He reels off a list of crops that, he claims, have had record harvests: cassava, maize, rice, sorghum, sweet potatoes and wheat.
他还能列出一份表，表上尽是些丰收的农作物：木薯、玉米、稻米、高粱、甜薯、小麦等等。
He reels off a list of crops that, he claims, have had record harvests: cassava, maize, rice, sorghum, sweet potatoes and wheat.
他还能列出一份表，表上尽是些丰收的农作物：木薯、玉米、稻米、高粱、甜薯、小麦等等。
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