一种杀虫剂

One of the theoretical issues arising from any pesticide is the effect of a killing substance on the target population. Because a target population is a biological entity, and as such, subject to evolutionary and ecological processes, evolutionary ecologists would predict that a substance designed to kill insects would at the same time act as a selection pressure for resistance to the same substance.

理论上，我们需要关注的问题之一是，杀虫剂对目标群体杀伤作用的影响，因为，目标群体属于一个生物体系，同样需要遵从进化和生态学过程，进化生态学家认为，杀虫剂用来杀虫同时，也是一种针对杀虫剂抗性的选择压力。

One insecticide under fire is azinphos-methol, or AZM, long employed in apple orchards to eradicate codling moths.

首当其冲的一种杀虫剂叫谷硫磷，或 AZM ，长期以来一直用于清除苹果蠹蛾。

The problem, of course, is to find an insecticide that kills only the elderly.

这其中的难题，当然，就是去找到一种杀虫剂，能够只杀死那些年长。

Of insecticide,with the idea that one of them should eliminate the

有一种设想是使用两种不同类型的混合杀虫剂，其想法是如果害虫对其中之一有抗药性，那么另一种就能杀死它。

Lindane is another type of insecticide although it is a lot stronger than other insecticides and has neurotoxin chemicals so it needs to be used carefully.

林丹是另一种类型的杀虫剂，虽然这是很多比其他杀虫剂，并已神经毒素的化学品，因此需要加以审慎使用。

Malathion is a type of insecticide that works well against head lice.

马拉硫磷是一种杀虫剂，以及工程对头虱。

A nonpersistent chemical,C4H7O4PBr2Cl2,used for mosquito control and as an insecticide against crop pests.

二溴磷一种非永久性化学药品，C4H7O4PBr2Cl2，用来抑制蚊子并作为杀死农作物害虫的一种杀虫剂

Photodecomposition of pesticides is one of the most important degradation pathways occurring in natural environment and that has a direct impact on the efficiency and the degradation dynamics of pesticides.

鱼藤酮是一种极具应用前景的植物性杀虫剂，进行该杀虫剂在自然环境条件下的残留降解和光降解研究有着十分重要的意义。

The invention relates to a insecticide prepared from plants, especially to a compound botanical insecticide containing pokeberry.

本发明涉及植物源杀虫剂，尤其是一种含商陆的复方植物杀虫剂。

It could be that one disease, perhaps a new type of lurgy, invites the others to infect the bee, or that a pesticide performs this role.

可能是一种疾病、也许是一种新的疾病，招致其他疾病感染蜜蜂，还可能是某种杀虫剂起了这种作用。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。