ocd 英 [ˌəʊ siː ˈdiː] 美 [ˌoʊ siː ˈdiː] 基本解释 Office of Civil Defense (美国)民防局 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]