twelve       
number uk/twelv/ us/twelv/
A1 (数字)12
the number 12
  The cafeteria opens for lunch at twelve (o'clock). 餐厅十二点开门供应午餐。 
 a twelve-seater minibus 12座的小巴 
 See also: dozen
 - More examples
 - I'm catering for twelve on Sunday, all the family are coming.
 - Our office floor space measured twelve metres by ten.
 - Hotel guests are requested to vacate their rooms by twelve noon.
 - The competition is open to children between six and twelve years of age.
 - We need a deposit of £165 followed by twelve monthly payments of £60.