这些洞穴壁画展示了人类最原始的生存技能。

These cave paintings reveal the ___primal survival skills of early humans.

安全感是人类最基本的需求之一。

Feeling safe is one of the ___primal human needs.

部落舞蹈唤起了人们内心原始的激情。

The tribal dance awakened a ___primal passion in people's hearts.