Think of it as conditions in the subsurface of a planet where you are very far away from a sun, but you still have water, energy, nutrients, which for some of them means food, and a protection.
상상해보십시오. 당신은 태양에서 아주  멀리 떨어져 있지만 여전히 물, 에너지,  음식과 같은 영양분, 그리고 보호가 있다고 생각해봅시다.