兼 (jiān): double; twice; simultaneous; holding two or more (official) posts at the same time

This bookstore also sells coffee and stationery; many students like to come here after school to drink something while reading.

She is pursuing a master's degree while working part-time at a company; although she is very busy, she says this allows her to balance study and work.

This job combines both challenges and fun; I learn something new every day, so even though it's tiring, I still really like it.

The boss wants to find someone with both ability and moral integrity to manage this team, someone who is not only capable but also has good character.

This city has convenient transportation, with both subways and buses, so you don't have to worry about traffic jams wherever you go.