An adversarial or uncooperative attitude can easily scuttle any positive results and plunge the discussion into pointless hostility.
对抗或不合作的态度可以很容易地破坏任何积极的结果，并投入到毫无意义的带有敌意的讨论。
Their discussion struck me as pointless.
我认为他们的讨论毫无意义。
I am afraid I find this discussion a bit pointless.
我认为这项讨论恐怕有点无意义。
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