wielonarodowościowe in English:

Warsaw is becoming a highly cosmopolitan city.

Most members of the European aristocracy have always been cosmopolitans.

The city has a cosmopolitan atmosphere.

London is a cosmopolitan city with inhabitants and vistors from many different cultures and countries.

Cities are supposed to be cosmopolitan and surprising; they should change in unpredictable ways.

London’s a very cosmopolitan city

The journalist is what you call a cosmopolitan.

Her standards for men are impossibly high, thanks to a girlhood rich in Disney, Cosmopolitan, and private school.