Encara no tenim significats per a "refute certain".
1He had been endeavoring to refute certain statements made by Cruikshank.
2If you will grant me an interview to-morrow, I will make an endeavour to refute certain charges which I have hitherto let go unchallenged.
3'I wish I were worthy to do so,' I answered, 'I might then refute certain statements in another quarter.
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