Usually pronounced /'ɪr-/ before an unstressed syllable, and /ɪr-/ before a stressed syllable. 通常在非重读音节前重读,在重读音节前弱读。
PREFIX (加在以字母r开头的单词前构成反义词)表示“不”，“非” Ir- is added to words that begin with the letter 'r' to form words with the opposite meaning. (加在以字母r开头的单词前构成反义词)表示“不”，“非”
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His behaviour was becoming increasingly irrational.
他的行为变得越来越不理智了。
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...its mixture of satirical wit, irreverence and spontaneity.
它融讽刺、机智、不敬、率真于一体