And I think that my mathematics, surprisingly enough, has been of great help to the surgeons studying lung illnesses and also kidney illnesses, all these branching systems, for which there was no geometry.
我认为我的数学， 令人吃惊地 为研究肺病 的外科医生 帮了大忙。 还有肾病. 这些器官都具有分枝系统， 但没有几何结构。