progression
/prəʊˈgreʃən/noun
1- a movement or development towards a destination or a more advanced state, especially gradually or in stages（尤指逐步或分阶段的）前进; 进展, 进步：
the normal progression from junior to senior status
地位从低到高的正常进程
mass noun their mode of progression through the forest.他们穿过森林的行进方式。
1.1
- a succession; a series一系列, 一连串：
counting the twenty-four hours in a single progression from midnight.
从午夜12点算起的连续24小时。
1.2
- Music a passage or movement from one note or chord to another【乐】（从一音或和弦进至另一音或和弦的）进行：
a blues progression.
一首勃鲁斯的进行。
1.3
1.4
- Astrology a predictive technique in which the daily movement of the planets, starting from the day of birth, represents a year in the subject's life【占星】（从生日起以行星每日的运行代表占星对象一年寿命的）算命术, 占卜术。
派生词
progressional
adjective词源
late Middle English: from Old French，from Latin progressio（n-），from the verb progredi （see PROGRESS）.