noun ダウンロード 🔗共有 有袋類 A mammal of which the female has a pouch in which it rears its young, which are born immature, through early infancy, such as the kangaroo or koala, or else pouchless members of the Marsupialia like the shrew opossum. Examples : "Many Australian animals, like kangaroos and koalas, are marsupials. " カンガルーやコアラなど、多くのオーストラリアの動物は有袋類です。 animal biology organism nature AIとチャット語彙ゲーム読解練習