どれだけ情熱を発揮しても 輪郭に反射して戻って来る しかもその熱は、平温に変容してる No matter how much passion you exert Reflected back in the contours. And that heat is morphing into a normal temperature.
と言う事は、いくらでも情熱を発揮できます This means that you can demonstrate your passion as much as you want!
頭で天を衝き、腰を大地に埋める With your head, hit the sky. Bury your waist in the earth
身体(身長)の上限下限が明らかになります 骨格の上限下限が明らかになるとも言えます The upper and lower limits of the body (height) will be revealed. It can also be said that the upper and lower limits of the skeleton are revealed.
私達は身体(骨格)の先端に立ちます これは寝てるような状態 骨格がフリーな状態になります We stand at the tip of our body (skeleton) This is like sleeping The skeleton is in a free state