1. The pad is impregnated with insecticide. 垫子上满是杀虫剂。
2. About 70% of the cocoa acreage is treated with insecticide. 大约70%的可可豆种植区都用杀虫剂处理过。
3. The insecticide used on some weeds can cause health problems. 喷洒在野草上的杀虫剂会引发各种健康问题。
4. Bollworms, however, are not necessarily developing resistance to the cotton's insecticide. 然而,棉铃虫并不一定会对棉花的杀虫剂产生抗药性。
5. Certain genetically modified strains of maize produce a natural insecticide that protects against maize-eating insects. 某些转基因玉米品种可以生产一种天然杀虫剂,保护玉米免受以玉米为食的昆虫的侵害。