progression
n
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.