by the book
US /baɪ ðə bʊk/
UK /baɪ ðə bʊk/
1.
按规矩, 按章办事
strictly according to the rules or established procedures
:
•
We have to do everything by the book to avoid any legal issues.
我们必须按规矩办事，以避免任何法律问题。
•
The manager always runs the department strictly by the book.
经理总是严格按规章制度管理部门。