她在数学方面表现优异，喜欢解决复杂的问题。

She excels in ___mathematics and loves solving complex problems.

数学帮助我们理解宇宙的基本规律。

___Mathematics helps us understand the fundamental laws of the universe.

这份报告的数学部分分析了成本效益比。

The ___mathematics section of the report analyzes the cost-benefit ratio.