bindexbetulaceous./bech-oo-ley-shuhs/US // ˌbɛtʃ ʊˈleɪ ʃəs //UK // (ˌbɛtjʊˈleɪʃəs) //贝壳类Definitionsadj.adjective · 形容词1.›belonging to the Betulaceae, the birch family of plants.Level 5More words in b →