telling /ˈtɛlɪŋ/ adjective Learner's definition of TELLING
[more telling; most telling]
1
: producing a strong or important effect强有力的；很有效的；有重大影响的 -
Her experience is/provides a telling example of why the nation's educational system needs to be changed.她的经历有力地说明了这个国家的教育制度需要变革。
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The most telling moment in the case was when the victim took the stand.这个案件中最重要的时刻是受害人出庭做证之时。
2
: giving information about someone or something without intending to（并非有意）显露实情的，流露心迹的