So that's the, the total heat load on your body when you're standing on this concrete surface in the middle of the sun.

这就是当你站在阳光下的这个混凝土表面上时你身体的总热负荷。

It seems that heat loss - the total heat transferred away from something, is linked to the surface area or total area of the body's outer surfaces when exposed to the cold.

似乎热量散失 —— 从某物传送出去的总热量 —— 跟表面积或身体暴露在寒冷之中的外部总面积有关。