rda 英 [ˌɑː diː ˈei] 美 [ˌɑːr diː ˈei] 基本解释 recommended dietary (或daily)allowance 推荐的日摄食量 同首字母单词 ra [ˈrɑː] raa raad ['rɑːd] raaf rabassaire [rəbə'seər] rabat rabaul rabbah rabbanist rabbanite rabbath rabbet ['ræbɪt]