单词b-c-e-
网络: 有；中；贝尔加拿大
The serpent or dragon eating its own tail has survived from antiquity and can be traced back to Ancient Egypt, circa 1600 B. C. E.
衔尾蛇或者龙在吞吃自己的尾巴这个保存下来的古代遗物可以追溯到古代埃及，大约公元前1600年左右。
Though no other such mechanisms have ever been found, experts believe that many more made around the same time in 100 B. C. E. once existed.
尽管没有其他的类似机械装置被发现，但是专家相信在同期的公元前100年就有很多这样的装置被制造并保存下来。