柯林斯词典arboretum /ˌɑːbəˈriːtəm/ (arboretums) 1. N-COUNT An arboretum is a specially designed garden of different types of trees. 树木园; 植物园 返回 arboretum剑桥词典a large garden where many types of tree are grown , for people to look at and to be studied for scientific purposes （供科学实验或教育用的）植物园 返回 arboretum