无济于事: be of no avail; a grain of wheat in a bushel of chaff; a pill to cure an earthquake; it does not help the matter.; of no help to the matter; to no effect; unhelpful; useless; (that) won't
但: Ⅰ副词(只) only; just; merely 短语和例子不求有功, 但求无过 do not hope to distinguish oneself, but only not to make mistakes; 但说无妨 just speak out what is on your mind; 在辽阔的原野上, 但见麦浪随风起伏。 on the vast fields
