Artificial intelligent assistant

dispensable

dispensable
/dɪˈspensəbl; dɪ`spɛnsəbl/ adj[usu pred 通常作表语]
not necessary or essential 不必要; 不重要
    A garage is useful but dispensable. 汽车房虽然有用, 但不必要.

牛津英汉双解词典

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