知识源于实践。
知识和才能来源于实践。
最重要的是知识来源于实践。
A most important thing is that knowledge comes from practice.
知道今天我依然认为在人的一生中兴趣是最好的老师（知识来源于实践）。
Still today i think that interest is the best teacher in one's whole life (and knowledge comes from practice). From joozone. com.
当我还是个孩子的时候，就听说过知识来源于实践。
When still a child, I was told that knowledge comes from practice.
古希腊人泰勒斯在说水是万物的本原、邹衍在创立五行学说、古印度人在提出四要素说时其知识均来源于人的生活实践；
It is based on the practical life of human to create the water of origin from ancient Greece Thales, Five Elements from Zou Yan and Four Elements from ancient Indian;
古希腊人泰勒斯在说水是万物的本原、邹衍在创立五行学说、古印度人在提出四要素说时其知识均来源于人的生活实践；
It is based on the practical life of human to create the water of origin from ancient Greece Thales, Five Elements from Zou Yan and Four Elements from ancient Indian;
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