twelvefold       
 adjective uk/ˈtwelv.fəʊld/ us/ˈtwelv.foʊld/
 十二倍的
twelve times as big or as much
  There has been a twelvefold increase in the number of cases. 案例数量增长了十二倍。 
 twelvefold       
adverb uk/ˈtwelv.fəʊld/ us/ˈtwelv.foʊld/
 (以)十二倍(地)
by twelve times
  The budget grew twelvefold from 2005 to 2010. 从2005至2010年预算增加了十二倍。