theory of reproduction

例句：

1. 1. The theory of evolution explains how species evolve over time.
   进化论解释了物种如何随时间演变。
2. 2.The theory of consciousness posits that our thoughts and experiences are the result of a complex brain process.
   意识理论认为，我们的思想、经验和体验是大脑复杂过程的结果。
3. 3.This theory has been tested in various experiments, but it still lacks strong empirical support.
   这一理论已经在各种实验中得到测试，但仍然缺乏强有力的实证支持。