lock and key hypothesis

例句：

1. 1. The researchers proposed a new model based on the lock and key hypothesis.
   研究人员提出了一个基于锁定和钥匙假设的新模型。
2. 2.This theory is often used to explain why certain species of plants have evolved to use lock and key mechanisms to protect themselves from predators.
   这一理论常被用来解释为什么某些植物物种进化出了使用锁定和钥匙机制来保护自己免受捕食者侵害。
3. 3. In this study, we tested the hypothesis that environmental factors play a crucial role in determining plant growth patterns.
   在这项研究中，我们测试了环境因素在决定植物生长模式中扮演关键角色的假设。