They are called pests.

我们叫它们害虫。

These mice are pests.

这些老鼠是害虫。

They are pests.

它们是害虫。

These new crops must also be more resistant to drought, heat and pests.

这些新作物还必须具有更强的耐旱、耐热和抗虫害能力。

There would be no weather-related crop failures due to droughts, floods or pests.

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。

Exotic insect pests can produce both short-and long-term effects on forest ecosystems.

外来害虫可以对森林生态系统产生短期和长期的影响。

Another benefit gardeners get from planting well above the ground is that they face fewer pests.

园丁们从天面种植中获得的另一个好处是，他们面临的害虫问题减少了。

Scientists have made genetic modifications to cotton to increase its resistance to insect pests.

科学家对棉花进行了基因改造，以增强其对害虫的抵抗力。

It is unmatched in its resistance to rot and pests, and its oils even protect nails against corrosion.

它对腐烂和害虫的抵抗力是无与伦比的，它的油甚至可以保护指甲不受腐蚀。

In contrast, a complex climax community, such as a temperate forest, will tolerate considerable damage from weather to pests.

相反，一个复杂的顶极群落，如温带森林，将承受天气和害虫所带来的大规模破坏。

There's unpredictable weather, changes in soil quality, and the ever-present possibility that pests and diseases may pay a visit.

天气不可预测，土壤质量发生变化，害虫和疾病随时都可能出现。

Pests often target specific tree species and, if they become established, they usually remain as permanent components of the ecosystem.

害虫通常以特定的树种为目标，一旦形成，它们通常会成为生态系统的永久组成部分。

Not to be left behind are the disease-spreading pests, about 100 species of which have become immune to a variety of insecticides now in use.

传播疾病的害虫也不甘落后，其中约有100种对目前使用的各种杀虫剂有了免疫力。

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。

Because of their tremendous breeding potential and genetic diversity, many pests are known to withstand synthetic chemicals and bear offspring with a built-in resistance to pesticides.

由于害虫有巨大的繁殖潜力和基因多样性，许多害虫被认为能够抵抗合成化学物质，而且生育的后代对杀虫剂具有内在的抵抗力。

According to farmers' report, the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not.

根据农民的报告，试验转基因种子的人与没有试验的人相比，每英亩用于控制害虫的杀虫剂用量只是稍微少一点。

He doesn't spray against pests or diseases.

他没有喷农药来防治害虫或疾病。

Exotic pests are more efficient than most abiotic disturbances.

外来有害生物比大多数非生物干扰更有效。

People aren't even required to seek permits to move plants or invertebrate animals around as long as they are not classified as pests.

人们甚至可以未经许可就对植物或无脊椎动物进行迁移，只要它们未被归类为有害动植物。

Away with all pests.

扫除一切害人虫。

Tot: Because they are pests.

陶特：因为它们是害虫。

"If you like pests," she muttered.

“如果你喜欢害虫的话。”她喃喃自语。

'Pests,' she called them.

她还叫他们'害虫'。

This new insecticide kills out most of the pests.

这种新杀虫剂消灭了大部分害虫。

Inbuilt resistance to pests, weeds and disease.

本身具有抵抗害虫，杂草及疾病的能力。

They also check for diseases or pests once a week.

也会进行每周一次的疾病或害虫检查。

Lots of plants produce powerful toxins to deter pests.

许多的植物会生产威力巨大的毒素来防止害虫。

Ginkgoes also stand up well to smog, road salt and pests.

银杏树也很经得住烟雾、铺路盐、害虫等的侵袭。

Some consume live plants and are considered agricultural pests.

一些甲虫以植物为食，因此被认为是农业害虫。

Similar considerations apply to dealing with pests and diseases.

类似的考虑也适用于病虫害和疾病。