当你误把经双曲面镜反射的映像当作平台上存放的实物而用手去抓时，当然是什么也抓不到了。

If you take the reflections from the hyperbolic mirror for the objects on the desk, you will for sure make a vain attempt to grasp them.

youdao

从设计的结果可以看出，凸双曲面反射镜的像差已经得到了很好的校正，从而使检验变得更加方便。

As a result, aberration of convex hyperboloid mirror is well corrected, so it is convenient for testing.

youdao