别为这些无谓的小事争吵了。
Don't argue over these ___futile little things.
他的努力似乎毫无意义，因为最终结果为零。
His efforts seemed ___futile, as the final result amounted to zero.
试图说服固执的他改变主意是徒劳的。
Trying to convince the stubborn him to change his mind is ___futile.
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