pentachlorophenate

例句：

1. 1. This pesticide is effectiveagainst a wide range of pests.
   这种杀虫剂对多种害虫有效。
2. 2. Thefarmers used this pesticide to control theweeds in their fields.
   农民们使用这种杀虫剂来控制他们田地里的杂草。
3. 3. Pentacloprid isa commonly used pesticide that can beharmful if not used properly.
   五氯苯醚菊酯是一种常用的杀虫剂，如果使用不当可能会造成伤害。