  67 ˭
  1 峢ҵůҲʵ·ңǰʵ˳ңǰΪһУȴܴﵽֻﰧޣ类һ㣬ֻ۰Ͱ͵ؿңһҺ󣬵ʼղܰǰŵԣҺɽˣҪԼҵ⣬ǰʹᣬʹ˺Ѹܣ˵־ҳ
  2 ٴǰ˳ңɰ̬֮ٴң겻ʵ֮ٴ˰ʤԼȫˣ˵ϣҽ˵İٴǰԼΪ飬Ҹȥϵĳݣϸ˵ݡжٴҰ簮İ֮жٴҺҳУҵš
  3 ֮ʱοʱ֣ʧ֮ʱ·ʹ֮ʱȥᡣ֮ʱ˭οأļ֮ʱ˭ҵأұ֮ʱ˭ܲĵĴأҪʱ˭Ըµأѵ˶̬ȽһȥΪʲô˵ļ䵱вһأΪʲôЩ˶ȴأⲻΪĳаܻԵ
  һ ȫ˵ڶʮƪ
