柯林斯詞典arboretum /?ɑ?b??ri?t?m/ (arboretums) 1. N-COUNT An arboretum is a specially designed garden of different types of trees. 樹木園; 植物園 返回 arboretum劍橋詞典a large garden where many types of tree are grown , for people to look at and to be studied for scientific purposes （供科學(xué)實(shí)驗(yàn)或教育用的）植物園 返回 arboretum