Lǎoshī yāoqiú wǒmen xué ér shí xí zhī, měitiān fùxí.
The teacher wants us to ‘learn and review at the right time,’ revisiting the material daily.
Tips
history
Opening of the Analects 《论语·学而》: ‘学而时习之,不亦说乎?’ (To learn and then review it in a timely way — is that not a joy?) The first line of the first chapter — effectively the opening words of the Confucian canon.
usage
说 in the original is the variant reading 悦 (yuè, ‘delight’), not modern shuō. 时 = at the proper/timely moment; 习 = practise, review.