[] that treats different people or things differently; not equal有区别的；不平等的◆The tax is unfair in its differential effect on large and small businesses.税收对大企业和小企业的差异效应是不公平的。◆Unions are objecting to differential pay levels for similar skills.工会反对相近技能有工资级差水平。◆Their policy of differential pricing(= supplying the same product to different markets at different prices) means poorer countries can also afford the medicines.他们的差别定价政策意味着穷国也能买得起药品。