查询词典 insecticides

Changing role of insecticides in crop protection.

家蝇的生态及其在传染病学上的意义。

Resistance becomes more and more important because insecticides are used in a larger area and with an increasing quantity.

随着杀虫剂的使用范围，数量，次数的增加，卫生害虫产生的抗药性越来越严重。

New insecticides are not expected in the short-term.

新的杀虫剂预计不会再短期内出现。

Be very certain that you are aware of the State laws regarding use of insecticides and their disposal.

非常肯定，大家都知道，国家法律关於使用农药和处置。

This method can be helpful because head lice are growing increasingly resistant to the insecticides used to remove them.

这种方法可以帮助，因为头虱越来越抗杀虫剂使用，以消除他们。

But the scientists say the Chinese farmers have now had to use more insecticides to fight the mirids.

但是科学家说，中国农民现在不得不使用更多的杀虫剂来对抗mirids。

It is common practice to screen for this toxicity in the evaluation of the safety of new insecticides.

一般在评价新杀虫剂的安全性时，常检查这一毒性。

That could work because older mosquitoes are more vulnerable to insecticides than younger ones.

这能够有效因为年长的蚊子比年轻的蚊子更受到杀虫剂的伤害。

The paper discusses the present research and application of microbial insecticides and their prospect in China.

阐述了微生物杀虫剂研究开发的意义、杀虫机理、国内微生物杀虫剂的研究应用现状及其发展前景。

This is due primarily to improvements in living standards and health services, especially due to the impact of antibiotics and insecticides and other control measures.

这主要是由于居住条件和卫生服务的改善，尤其是由于使用了抗生素、杀虫剂和采用了其他控制措施。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？