in one

Từ điển Oxford Advanced Learner 8th

in ˈone idiom
used to say that sb/sth has different roles, contains different things or is used for different purposes
•She's a mother and company director in one.
•It's a public relations office, a press office and a private office all in one.
see also ↑all-in-one
Main entry: ↑one_idiom