Teach others by your example
... 示范试验 demonstration test 躬亲示范 Teach others by your example 示范装置 demonstration plant ; demonstration unit ...
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普通老师照本宣科，好老师解疑答惑，超级棒的老师躬亲示范，伟大的老师点拨引路。——美国作家威廉•亚瑟•沃德。
The mediocre teacher tells. The good teacher explains. The superior teacher demonstrates. The great teacher inspires. -William Arthur Ward.
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