He has come to be recognized as an expert in the problem of overpopulation and food supply.
由于他的经验促使他终于成为了公认的人口过剩和食物供应问题的专家。
But can we blame those who looked and failed to see what Galileo saw, if we remember that to use a telescope at the limit of its powers calls for long experience and intimate familiarity with one's instrument?
但是,如果我们想到,便用一架倍数有限的望远镜需要长期的经验和对自己仪器的熟悉程度,那么我们怎么能去责备观察了天空但没有看到伽利略所看到的东西的那些人呢?