- look for the old so as to learn the new
- 温: warm; lukewarm; hot; gentle; ...
- 知: know; realize; be aware of
- 新: new; fresh; novel; up-to-dat ...
- 温故知新: review what has been learned and learn sth. new; gain new insights through restudying old material; learn the new by restudying the old; reviewing the past helps one to understand the present.; review the old and learn the new; review the past and you'll know better the present.; review what you have learned and know what is new.; review what you have learnt in order to learn sth. new.: ""温故知新, 可以为师矣。"" ""those who learn the new by restudying the old may be teachers."
- 凭……而知: be known by
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