Without review, you will absolutely forget what you've learnt as quickly as possible.

不复习，你绝对会很快忘记学过的知识。

youdao

According to the latest deal Afghanistan will not release "dangerous" inmates without review, and about 50 foreign inmates will remain in US hands.

BBC: US army hands over Bagram prison to Afghanistan

The aluminium smelter and power plant projects are part of a larger plan to industrialize northeastern Iceland with energy-intensive industries, first dreamed up in the 1950s and pursued by successive governments without review.

CNN: Iceland locked in national dam dispute

These are items inserted into spending bills by members of Congress without adequate review.

WHITEHOUSE: Weekly Address: Exports & Earmarks