primal

verb [vt. 及物动词] vt. 释放（被压抑的童年情绪）

Perhaps that is why we explore the starry skies, as if answering a primal calling to know ourselves and our true ancestral homes. 也许这就是我们探索星空的原因，仿佛在回应一种原始的召唤，去了解我们自己和我们祖先真正的家园。