随着人口密度的增长，农作物的种植已经扩展到了越来越干旱的地区。
The cultivation of crops has expanded into progressively drier regions as population densities have grown.
此外，最近的证据表明，蚂蚁的农作物种植可能比人们想象的更复杂，适应性更强。
Moreover, recent evidence suggests that the crop farming of ants may be more sophisticated and adaptable than was thought.
在过去50年里，改良的农业科技技术显著提高了农作物的产量，耕种面积扩大了12%。
Over the last five decades, improved farming techniques and technologies have helped to significantly increase crop yields along with a 12% expansion of farmed land use.
目前正鼓励农民兼种新的农作物。
因天气寒冷，农作物今年成熟得晚。
这些昆虫可严重危害农作物。
农作物定期喷洒杀虫剂。
他说干旱已连续两年造成严重农作物歉收。
He said drought had led to severe crop failure for the second year running.
把该技术扩延到其它农作物上也许是可能的。
It might be possible to extend the technique to other crop plants.
主要农作物为水稻。
农民用水来种植蔬菜、水稻、玉米等农作物，工厂用水来制造产品。
Farmers use water to grow vegetables and crops like rice and corn, factories use water to make products.
他们吃农作物，蔬菜，甚至树木。
这足以对农作物造成严重损害。
一些农民可以在这里种植农作物。
受污染地区的水和农作物会让人患病。
Water and crops in polluted areas can make people very sick.
与此同时，欧洲西北部的农作物正遭受着过去80年来最大的旱灾。
Meanwhile in Europe, crops in the northwest are suffering the driest weather in the past 80 years.
英国的农作物种植受自然条件的限制。
Crop-growing in the UK is restricted due to its natural conditions.
许多农作物被霜冻坏了。
和牛羊一样，家畜也消耗了大量的农作物。
Livestock, like cows and sheep, also consume large amounts of crops.
水中田畦上的农作物肯定受益于周围的水。
The crops on chinampas definitely benefited from the water surrounding them.
日本人提供劳动力，农作物由劳工和地主瓜分。
The Japanese provided the labor and the crop was divided between laborers and landowners.
它谈论朋友和敌人，卡车和道路，农场和农作物。
It talks about friends and enemies, trucks and roads, farm and crops.
这是世界上一些主要农作物产量增长速度的下降。
This is the decline in the growth in yields of some of the world's major crops.
已有充分的理由可以说明农作物为什么不使用干旱防御。
There are good reasons why crop plants do not use dryness defenses already.
不同的农作物区或草场都在母体社区的几天步行范围内。
Different crop zones or pasturelands are located within a few days walk of the parent community.
土壤首先被其中生长的农作物消耗，其次被细菌活动消耗。
The soil is depleted first by crops grown in it and second by bacterial action.
经过五代人的耕耘，这片土地太湿了，不适合种植农作物。
Over five generations the land has been too wet for cropping.
过去十年，降雨量不断减少，这让他可以种植高利润型农作物。
But during the past decade declining rainfall has allowed him to plant highly profitable crops.
不会发生干旱、洪水或害虫导致与天气相关的农作物歉收的现象。
There would be no weather-related crop failures due to droughts, floods or pests.
风暴还使古巴部分地区瘫痪，造成数人死亡，财产和农作物被毁。
The storm also paralyzed areas of Cuba where several people were killed and property and crops destroyed.
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