progagation of population

例句：

1. 1. The progagation of thespecies is a complex process that involves geneticand environmental factors.
   物种的繁殖是一个复杂的过程，涉及遗传和环境因素。
2. 2. The progressof the project has been slow due tolack of funding.
   由于缺乏资金，项目的进展缓慢。
3. 3. The development of new technologies is essentialfor the advancement of society.
   新技术的发展对社会进步至关重要。