serves no purpose

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释义
没有用；毫无用处
to have no particular use or function : to not be useful or helpful in any way

例句
Mike: That'd be a mistake.
Gus: This discussion serves no purpose. Wait where you are.(Better Call Saul)
麦克：他只是犯了个小错。
古斯：争论没有意义。你就在那儿等着吧。(风骚律师)