noun ダウンロード 🔗共有 殺虫剤 Anything, especially a synthetic substance but also any substance (e.g. sulfur), or virus, bacterium, or other organism, which kills or suppresses the activities of pests. Examples : "The farmer used pesticides to kill the insects eating his crops. " 農家は作物を食べている害虫を駆除するために殺虫剤を使用した。 environment agriculture science substance biology chemistry plant insect organism AIとチャット語彙ゲーム読解練習