rockless 英 ['rɒkles] 美 ['rɒkles] 基本解释 adj.无岩石的 同首字母单词 ra [ˈrɑː] raa raad ['rɑːd] raaf rabassaire [rəbə'seər] rabat rabaul rabbah rabbanist rabbanite rabbath rabbet ['ræbɪt]