有大脑的

例句：

1. 1. She has a sharp brain and can solve complex problems quickly.
   她头脑聪明，能迅速解决复杂的问题。
2. 2. The scientist's research is based on his keen brain.
   这位科学家的研究基于他敏锐的头脑。
3. 3. He was so focused that he didn't notice the danger until it was too late.
   他太专注了，直到危险来临时才注意到。