心神

例句：

1. 1. She has a keen mind for numbers.
   她对数字有敏锐的头脑。
2. 2. The scientist's mind was as sharp as a razor.
   这位科学家的头脑像剃刀一样锋利。
3. 3. He had a strong mental image of the future.
   他有一个强烈的未来图像。