While the rodents would be treated as pests anywhere else in the world , here they are offered food and shelter .
尽管啮齿类动物被世界其他地方当做害虫,在这里人们却向它们提供食物和住所。
A 2010 study published in the same journal suggests that allergic responses to tick saliva prevent the pests from attaching and feeding .
该杂志2010年发表的一份研究报告显示,能够激发出口水的过敏反应可以防止害虫附着及侵蚀。
As pests and diseases evolve and spread , crops genetically modified to resist them could boost production , or at least maintain yields .
随着害虫和疾病的进化和扩展,基因改良的作物的产量会更高,或者至少保持产量不变。
But without a new crop of trained plant pathologists , it will be hard to control what will surely be a rise in new pests and diseases .
但是由于缺少新一批受过训练的植物病理学家,明显处于增长之势的害虫和疾病将很难控制住。
Global warming upsets the world 's water cycle , increases the burden of pests , desiccates soil and reduces yields .
全球变暖打乱了全球的水循环,增加了害虫的负担,改变土壤看,减少产量。
Organic farms don 't use the harmful pesticides and chemicals generally used to ward off pests .
有机农场一般不使用有害的农药和化学制品来抵御害虫。
Winters no longer get cold enough in many places to kill off different pests and diseases .
许多地方的冬天不再那么寒冷了,无法扼杀各类害虫和疾病。
Higher temperatures could mean longer growing seasons for some farmers but might also bring more pests or change weather patterns that some crops depend on .