protovirus theory

例句：

1. 1. The protovirus theory posits that viruses are not entirely inanimate, but rather possess a degree of self-awareness.
   原型病毒理论认为，病毒并非完全无生命，而是具有一定的自我意识。
2. 2. This theory has been challenged by recent research suggesting that viruses may not be as simple as previously thought.
   这一理论最近受到研究挑战，研究表明病毒可能并不像之前认为的那样简单。
3. 3. The protovirus theory is often used to explain how viruses spread from one host to another.
   原型病毒理论常被用来解释病毒是如何从一个宿主传播到另一个宿主的。