grapes treated for control of insects

例句：

1. 1. The grapes are being treated for pest control.
   这些葡萄正在被用来进行害虫控制。
2. 2. Thefarmers used to treat their grapes witha chemical spray.
   农民过去用一种化学喷雾来处理他们的葡萄。
3. 3. The grapes were treated with afungicide to prevent disease.
   葡萄被用了一种杀菌剂来预防疾病。