rumpbone 英 ['rʌmpbəʊn] 美 ['rʌmpboʊn] 基本解释 n.[解]骶骨 同首字母单词 ra [ˈrɑː] raa raad ['rɑːd] raaf rabassaire [rəbə'seər] rabat rabaul rabbah rabbanist rabbanite rabbath rabbet ['ræbɪt]