墙体的表面,一般在室内装修时提到比较多。墙面装修处理一般是刷漆或者粘壁纸。
墙面不是白的,而是灰不溜秋的。
墙面和天花板都是石膏板的。
几何图案是14世纪流行的墙面装饰。
Geometric designs were popular wall decorations in the 14th century.
And so the photons hitting the wall actually put pressure on the wall, but the pressure is so low.
所以光子碰撞墙面,事实上在对墙加压,但只是压力很小。
When I am looking at that wall, its photons are hitting the wall and coming back to me.
当我盯着墙看的时候,光子撞击墙面,又回到我眼中来。
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