3 sentences

1. 我们必须从这些失败中吸取经验。

   wǒ​men bì​xū cóng zhè​xiē shī​bài zhōng xī​qǔ jīng​yàn.

   We must learn from these failures.

   Source: AI Challenger 2017

2. 我们鼓励学生从错误中汲取经验。

   wǒ​men gǔ​lì xué​sheng cóng cuò​wù zhōng jí​qǔ jīng​yàn.

   We encourage students to learn from their mistakes.

   Source: CCMatrix

3. 有时候，你只需犯一次错误就能从中汲取经验教训。

   yǒu shí​hou, nǐ zhǐ​xū fàn yī​cì cuò​wù jiù néng cóng zhōng jí​qǔ jīng​yàn​jiào​xun.

   Sometimes you only need to make a mistake once to learn a lesson.

   Source: CCMatrix