英语语法分析

In remote regions, the air is pure and the crops are free of poisonous insecticides.

在偏远地区，空气是纯净的，庄稼也不用有毒的杀虫剂。

《柯林斯英汉双解大词典》

Farm workers frequently come in contact with these insecticides.

农场工人常常接触这些杀虫剂。

In the warm enclosed waters of farm ponds, conditions are very likely to be lethal for fish when insecticides are applied in the vicinity.

当杀虫剂在农场附近池塘的温暖封闭水域使用时，环境很可能对鱼是致命的。