| 释义 |
adjectivenounper·en·nialBrE /pəˈreniəl/ NAmE /pəˈreniəl/ adjective continuing for a very long time ; happening again and again 长久的；持续的；反复出现的◆ the perennial problem of water shortage 缺水这个老问题◆ that perennial favourite , hamburgers 汉堡包，永远受人喜爱的食品(of plants 植物) living for two years or more 多年生的▸ per·en·ni·al·ly BrE /pəˈreniəli/ NAmE /pəˈreniəli/ adverb ◆ a perennially popular subject 长年的热门话题per·en·nialBrE /pəˈreniəl/ NAmE /pəˈreniəl/ noun any plant that lives for more than two years 多年生植物 ➡ compare annualnoun (2 ) , biennialnoun |