我发现这些高等数学问题很难理解。

I find these advanced math problems difficult to ___grasp.

她没能理解财务状况的严重性。

She failed to ___grasp the seriousness of the financial situation.

他花了一些时间才完全理解那个复杂的哲学概念。

It took him a while to fully ___grasp the complex philosophical concept.