insecticides造句
Confine the use of
insecticides to the evening and do not spray plants that are in flower.
只在晚间使用杀虫剂，而且不要对正在开花的植物喷药。
In remote regions, the air is pure and the crops are free of poisonous
insecticides.
在偏远地区，空气很纯净，庄稼也不施用有毒的杀虫剂。
Farm workers frequently come in contact with these
insecticides.
农场工人常常接触这些杀虫剂.