rigidulous

例句：

1. 1. The old man's speech was so rigid that it mademe uncomfortable.
   老人说话太僵硬了，让我不舒服。
2. 2. The new policy is designed to makethe economy more flexible and adaptable.
   新政策旨在使经济更加灵活和适应变化。
3. 3.The company's decision to invest innew technology was a rigid one, butit ultimately proved to be successful.
   公司决定投资新技术是一个固执的决定，但最终证明是成功的。