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 sprayed pesticide on his crops to protect them from insects. " 農家は害虫から作物を守るために殺虫剤を散布しました。 substance environment agriculture chemistry biology ecology plant insect organism technical AIとチャット語彙ゲーム読解練習