Important discoveries and inventions are usually made by man of genius.
重要的发现和发明通常是有天才的人所为。
Important discoveries and inventions are usually made by men of genius.
重要的发现和发明通常是天才的人所为。
But a good understanding of the comparative times of discoveries and inventions in China and the Western world is quite indispensable.
然而,绝对不可缺少的要求是,要能充分理解中国和西方许多发现和发明的年代差异。
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