1. Don't listen to that lamebrain, he has no idea what he's talking about.
别听那个脑筋简单的人，他根本不知道自己在说什么。

2. Only a lamebrain would believe such a ridiculous conspiracy theory.
只有脑筋简单的人才会相信如此荒谬的阴谋论。

3. Stop acting like a lamebrain and start thinking logically.
别再像个脑筋简单的人了，开始理性思考吧。

4. I can't believe I have to work on a project with that lamebrain.
我简直无法相信我得和那个脑筋简单的人一起做项目。

5. It's no wonder he made such a foolish mistake, he's a total lamebrain.
难怪他会犯如此愚蠢的错误，他简直就是个脑筋简单的人。

6. She always acts like a lamebrain when it comes to making important decisions.
每当需要做重要决定时，她总是表现得像个脑筋简单的人。