这些因素中每一个都可以用客观的数据加以衡量。
EMILY COHEN: "Testing is probably one of the -- it's the most objective data that we have on teacher performance.科恩:“考试是教师绩效中最客观的数据。
Clarity of focus on objective data has been a hallmark of BP's Statistical Review - in good times and bad - for 59 years.对客观数据的明确关注一直作为BP的统计年鉴的特点——不管是在繁荣时期还是在衰退时期——保持了59年。