[] ( AEI) () an official measurement in the UK that shows the increase in the average amount of money earned by a worker in a year, sometimes within a particular industry平均收入指数（英国官方衡量指标，表示工人一年平均收入的增长情况，有时是指某一特定行业的情况）◆The Average Earnings Index (AEI) is Great Britain's key indicator of how fast earnings are growing.平均收入指数是英国衡量收入增长速度的关键指标。◆the average earnings index for the services sector服务业的平均收入指数