noun ダウンロード 🔗共有 蔓延, 発生 The presence of a large number of pest organisms in an area or field, on the surface of a host or anything that might contact a host, or in the soil. Examples : "The garden had a serious infestation of aphids, making it impossible to enjoy the vegetables. " 庭にはアブラムシが蔓延し、野菜を楽しむことが不可能になっていた。 organism environment agriculture biology nature insect animal plant AIとチャット語彙ゲーム読解練習
