器具表面发热，对热不敏感的人使用时必须注意。
Surfaces will be heated, not sensitive person must be used with attention.
动物体型越大，其体表体积比越低；躯体每增加一盎司的重量，所能散发热量的表面就成比例减少。
The bigger the animal is, the lower its surface-to-volume ratio; for every ounce of body mass, there is proportionately less surface through which heat can escape.
在发热材料内其运动方向与材料表面成其它任何角度的光子在碰到表面时都会被反弹回来。
Photons travelling at any other angle within the material are reflected back inside when they reach the surface.
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