She was absorbed with the mathematical problem.

她专心致志地演算数学题。

His classmates were labouring with elementary algebra.

他同学们正在绞尽脑汁地演算初等代数题。

In this paper, we propose a new gridded switchbox channel routing approach to minimize the crosstalk effects.

在本篇论文中，我们提出一个降低题通道绕线演算法。

One cannot achieve an exponential speedup by treating the problems as structureless “black boxes,” consisting of an exponential number of solutions to be tested in parallel.

是把题看成没有结「箱」，里头有指数多个在等待平行测试可能解，然后去找出可达到指数加速演算法，这点目前还做不到。