origination

例句：

1. 1.The origination of the species is a complex process involving genetics and environment.
   物种的起源是一个复杂的过程，涉及遗传和环境。
2. 2.The origination of the new species has been studied extensively in recent years.
   新物种的起源在近年来已经广泛研究。
3. 3. The origination of the disease was traced back to a specific strain of bacteria.
   疾病的发生追溯到一种特定的细菌菌株。