That we (should) review lessons regularly is very important.

我们定期复习（有规律地复习）功课是非常重要的。

youdao

Experiencing Chinese Oral Course consists of 8 books, each of which has 18 lessons and 2 to 4 review lessons.

本系列教材遵循汉语水平越低分班应该越细的大原则，共编写8册，每一册有18课和2到4个复习课。

youdao

What a good habit it is to review your lessons in time!

及时复习功课是一个多么好的习惯啊！

youdao

People can also write to the review group at Flooding Lessons Learned Review, Cabinet Office, 10 Great George Street, London SW1P 3AE.

BBC: RELATED BBC SITES

The Trust has ordered the BBC Executive board to review "lessons learnt".

BBC: Worldwide sells Lonely Planet business at ?80m loss

During this unusual cold spring of 2011 will Japanese citizens review the lessons of the post-quake global interaction, and reveal their inner selves?

FORBES: The Great Eastern Japan Earthquake and Social Networking in Japan