What is the name of the city that already served as host more than once? | The names in English or Hanzi? | English, please.
SELECT t1.city  FROM city AS T1 JOIN hosting_city AS T2 ON T1.city_id   =   T2.host_city GROUP BY t2.Host_City HAVING count ( * )   >  1
city that served as host more than once refers to HAVING COUNT(*) > 1; names in English implies selecting from a table where names are stored in English;