adj.适于行走的
But both the arboreal and the cursorial scenarios have explanatory gaps. 但是那两个理论都有盲点。
As the idea that birds descended from dinosaurs gained acceptance by all but a few paleontologists, so too did the cursorial hypothesis. 鸟类从恐龙演化出来的想法，成为古生物学界的主流意见后，奔跑假说也成为主流。
cursorial birds 走禽类
cursorial insects 只走不飞的昆虫
cursorial hypothesis 树栖说
