n. (botany) a plant lasting for three seasons or more
词态变化
原型:perennial
变形:s
常见例句
1
n any of various perennials of the genus Geum having usually pinnate basal leaves and variously colored flowers
2
n herbaceous perennials: shellflower
3
n any of several perennials of the genus Aletris having grasslike leaves and bitter roots reputed to cure colic
4
any of various perennials of the eastern United States having thick rough leaves and long-stalked showy flowers with drooping rays and a conelike center
5
any of numerous perennials having tuberous roots and long narrow bladelike leaves and usually yellow lily-like flowers that bloom for only a day