柯林斯詞典deciduous /d??s?dj??s/ 1. ADJ A deciduous tree or bush is one that loses its leaves in the fall every year. (樹或灌木每年)落葉的[usu ADJ n] 返回 deciduous劍橋詞典A deciduous tree loses its leaves in autumn and grows new ones in the spring . （樹木）落葉的 比較evergreen adjective 返回 deciduous