名词
中文翻译：残留杀虫剂
同义词：
['remaining insecticide', 'residual pesticide']
例句：
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1. Theresidue of the chemical was found to be harmful to the environment.
这种化学物质的残留对环境有害。
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2. The farmers used residual insecticides to protect their crops from pests.
农民们使用残留杀虫剂来保护他们的庄稼免受害虫侵害。
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3. Residual insecticides are often more effective at controlling insects than traditional chemicals.
与传统化学品相比，残留杀虫剂在控制昆虫方面往往更有效。