n.杀虫剂；农药
The crops are regularly sprayed with pesticide. 庄稼定期喷洒杀虫剂。
The insects have become resistant to the pesticide. 这些昆虫已经对杀虫剂有抗药性了。
The seeds and the pesticide are both ready. 种子跟农药都准备好了。
n.杀虫剂
