超过300个石球零散分布在哥斯达黎加，我们对它们的来历一无所知——人们在公元1000年时将它们弄回来的事迹已无从考究。

Over three hundred of them are scattered across Costa Rica, but we’ll never know why – the people who made them back in 1,000 C.E. are long gone and had no written records.

youdao

超过300个石球零散分布在哥斯达黎加，我们对它们的来历一无所知——人们在公元1000年时将它们弄回来的事迹已无从考究。

Over three hundred of them are scattered across Costa Rica, but we’ll never know why – the people who made them back in 1, 000 C.E. are long gone and had no written records.

youdao