Early human tools and construction techniques as the original, like humans are the most junior.

早期人类的工具和建筑技术如同原始人类一样都是最初级的。

youdao

Early human tools and construction techniques as the original, like humans are the most junior.

早期人类的工具和建筑技术如同原始人类一样都是最初级的。

youdao