One can trace such expeditions back to ancient Sumeria, the earliest known Middle Eastern civilization.

这样的探险可以追溯到古苏美尔时期，这是已知的最早的中东文明。

youdao

One can trace such expeditions back to ancient Sumeria, the earliest known Middle Eastern civilization.

这样的探险可以追溯到古苏美尔时期，这是已知的最早的中东文明。

youdao