bloc       
noun [ C ] uk/blɒk/ us/blɑːk/
 集团,阵营(指具有类似政治利益的国家或人的群体)
a group of countries or people that have similar political interests
  The European Union is a powerful trading/trade bloc. 欧盟是一个强大的贸易集团。 
 the former Eastern/Communist bloc countries 前东欧集团/共产主义阵营国家 
 Synonym: axis