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1. Pyrifoline is an effective insecticide that can be used to control aphids on citrus trees.
吡虫啉是一种有效的杀虫剂，可用于控制柑橘树上的蚜虫。
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2.The farmers applied pyrifoline to their crops to protect them from the harmful effects of pests.
农民们将吡虫啉喷洒在作物上，以保护它们免受害虫的侵害。
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3.Due to its broad spectrum and low toxicity, pyrifoline has become a popular choice for controlling various types of pests.
由于其广谱性和低毒性，吡虫啉已成为控制各种类型害虫的热门选择。