[blame] 质疑;为难
即使牛顿（Newton）的哲学，若未经允许加以质难，人类对它的真确性也不会象现在这样感到有完全的保证。
If even the Newtonian philosophy were not permitted to be questioned , mankind could not feel as complete assurance of its truth as they now do .
人们很难就她在外交政策方面的成就提出质难。
Her accomplishments in foreign policy are hard to question .
质难质难质难