double - certificate teachers

英 美
  • “双师型”
  • certificate n.执照;证(明)书vt.认可;批准;发证书给...
  • double adj.双重的;成双的;两倍的v.翻一番;使...加倍n.两倍;双份
  • teachers n.教师(总称)名词teacher的复数形式.