He has all the Celtic power of quick intuition, but he is deficient in the wide range of exact knowledge which is essential to the higher developments of his art.
他具有凯尔特民族拥有的所有快捷的直觉洞察力,可是缺乏提高侦探艺术的层次所必需的广泛学识。
There are not many persons who pretend to an exact knowledge of the subject.
自认对那个题目有确切了解的人不多。
Until we accumulate enough exact knowledge, any practice is in vain and is bound to fail.
在我们积累了足够的准确知识前,任何实际操作都是徒劳无功的,注定会失败。
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