1. Samples of the water contained pesticide. 水样中含有杀虫剂。
2. The crops are regularly sprayed with pesticide. 庄稼定期喷洒杀虫剂。
3. This pesticide is diluted with water and applied directly to the fields. 这种杀虫剂用水稀释后直接施用在田里。
4. Other machines would distinguish problem weeds from crops and eliminate them with shots from high-power lasers or a microdot of pesticide. 其他的机器将有问题的杂草从农作物中区分出来，然后用高能激光照射或农药微粒来消灭它们。
5. Perhaps we should give special attention to the conservation of such plant species since they lack key factors in their defenses against the environmental disruption caused by pesticide use. 也许我们应该特别注意保护这类植物，因为它们缺乏关键的因素来抵御由使用杀虫剂而造成的环境破坏。
