http://www.youtube.com/watch?v=V32cPNXsy-Q 2:04 in the upper echelons of the Church
http://www.youtube.com/watch?v=2-yCJUaH0GU 0:13 in the highest echelons of the Party
http://www.youtube.com/watch?v=Mc8O9EnAuLo 23:20 lower echelon task
http://www.youtube.com/watch?v=iyFlxUyc2A0 1:48 clan struggle in the higher echelons of Russian politics
http://www.youtube.com/watch?v=Xk6BXbD4GTg 8:32 at the top echelons of banks or government
練習問題解答
a-4567 the upper echelons of society
a-7398 Hollywood's top echelon of actors
b-5519 the upper echelons
b-6239 the upper echelons of society