复数： insecticides
易混淆的单词： Insecticide

Conventionally grown heads may be subjected to insecticide spray to avoid pest infestation .

通常，这些卷心菜都是经受过杀虫剂的喷雾喷过以避免被虫子破坏。

In areas where insecticide is not sprayed , mosquitoes without the resistance gene do better .

在不喷洒杀虫剂的地方，蚊子没有抗药基因反而好。

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。

In a recent study , researchers in west africa have shown that spraying insecticide indoors can greatly reduce malaria transmission .

在最近的一项研究中，西非研究人员已经证实在室内喷洒杀虫剂可以极大地减少疟疾的传播。

Suppose most of them are sensitive to insecticide , but a few harbor a version of a gene that confers resistance .

假设这个种群中的大多数蚊子都对杀虫剂很敏感，但是有一少部分体内有抗药性的基因。