In remote regions, the air is pure and the crops are free of poisonous insecticides.
在偏远地区，空气是纯净的，庄稼也不用有毒的杀虫剂。
Insecticides also kill helpful insects.
杀虫剂也会杀死益虫。
Insecticides also kill helpful insects.
杀虫剂也会杀逝世益虫。
Put a stop to insecticides in your home and office.
无论是在家里还是办公室都不要使用杀虫剂。
He says they are not as bad as other insecticides.
他说这些试剂都不像其他杀虫剂害处颇多。
Systemic insecticides have shown particular promise .
内吸杀虫剂看来特别有效。
Resistance to insecticides has been apparent for many decades.
杀虫剂抗药性的出现已有数十年。
Currently there is a lack of alternative, cost-effective and safe insecticides.
目前缺乏缺乏具有成本效益并具有安全性的替代杀虫剂。
Currently % there is a lack of alternative, cost-effective and safe insecticides.
跟读目前缺乏缺乏具有成本效益并具有安全性的替代杀虫剂。
Due to the wide use of insecticides, resistance of many insects increased quickly.
随着杀虫剂的研发和广泛使用，越来越多的昆虫对杀虫剂产生了抗药性。
The development of new, alternative insecticides is an expensive and long-term endeavour.
新的替代杀虫剂的研发是一项昂贵的长期努力。
The invention of modern, synthetic insecticides has more or less killed that practice off.
而现代合成杀虫剂的发明在一定程度上结束了尼古丁的使命。
The quality, security and application status of insecticides is summarized in this paper.
概述了茶园农药质量安全、使用管理现状。
And while insecticides are helpful, mosquitoes quickly build a resistance to the treatment.
虽然，杀虫剂能帮助杀死蚊子，但是蚊子能很快建立对抗杀虫剂的抗性。
And while insecticides are helpful, mosquitoes quickly build a resistance to the treatment.
虽然，杀虫剂能帮助杀死蚊子，但是蚊子能很快建立对抗杀虫剂的抗性。
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