Home/betulaceousbetulaceous/bech-oo-ley-shuhs/US // ˌbɛtʃ ʊˈleɪ ʃəs //UK // (ˌbɛtjʊˈleɪʃəs) //贝壳类Definitionsadj.形容词 adjective1: belonging to the Betulaceae, the birch family of plants.Level 5Browse all words →