not put sth down 爱不释手
If you cannot put a book down, you are unable to stop reading it until you reach the end.
舍不得放下(书)，对(书)爱不释手
They treated it as an indispensable nourishment, he saw the book would not put it down.
他们把书当作不可缺少的营养品，看见书就爱不释手。
It was so exciting from the first page I couldn't put it down. 这本书从一开始就引人入胜，我简直爱不释手。
