1 [U] ~ (fromsth) (to sth) (process of) moving forward or developing,esp in stages or gradually; progressing 进行, 进展, 进程, 进步（尤指按步骤的或渐次的）
*the team's progression to the first division 该队的晋级为甲级队
* Adolescence is the period of progression from childhood to adulthood. 青春期是由童年到成年的过渡期.
2 [C] sequence or series 连续; 一系列
*a long progression of sunny days 连续的晴天.
a gradual process of change or developmentprogression of the natural progression of the diseaseprogression through his career progression through the organizationprogression from/to the logical progression from accountant to financial controllerprogression towards Europe's progression towards economic and monetary union[C]
a number of things coming one after the other
→arithmetic progression, geometric progression