comer          
noun [ C ] uk/ˈkʌm.ər/ us/ˈkʌm.ɚ/
 来到…的人
someone who arrives somewhere
  Most people sold to the first comers. 大部分人都把东西卖给了先到的人。 
  mainly US informal很有可能成功的人 
someone who is likely to be successful
  He was a young star from the moment he arrived - everybody thought he was a comer.  他一来就是最优秀的年轻人——每个人都认为他很有可能会成功。 
 See also: all comers