1.成绩单 Report card 2.供求关系 Supply-demand relation 3.供大于求 Supply exceeding demand 4.资源的稀缺性 Resources scarcity 5.考虑边际效益 Considers the marginal benefit 6.基尼系数 Gini's coefficient 7.质量体系认证 Quality system authentication 8.上级 Higher authority 9.下级 Subordinate，lower level ，junior
