opec 英 [ˈəʊpek] 美 [ˈoʊpek] 基本解释 n. Organization of Petroleum Exporting Countries,石油输出国家组织 同首字母单词 o [əʊ] oa [,əʊ 'eɪ] oaa oaec oaf [əʊf] oafish [ˈəʊfɪʃ] oahu oak [əʊk] oaken ['əʊkən] oakland [ˈəʊklənd] oaklet ['əʊklɪt] oakley [ˈəʊkli]