Artificial intelligent assistant

hardback

hardback
n [C, U] book bound in a stiff cover 精装书
    Hardbacks are expensive. 精装书很贵.
    My novel has just appeared in hardback. 我的小说刚出精装本.
    [attrib 作定语]
a hardback book 精装书. Cf 参看 paperback (paper).

牛津英汉双解词典

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