The light is only coming from the upper left so the clouds ideally should not be visible on the lower right side of the surface. 光只是在左上侧所以云完美地，在右下侧的表面是不可见的。
The Double Sided Leaf shader displays different materials on each side of a surface, while at the same time allowing shadows to show through to the underside. 双面叶材质在表面的两侧显示不同的材质，同时允许阴影透过下侧。
That carpet needs a pad under it. 那块地毯下面要铺衬垫。
The remark made me want to climb under the pew. 这句话使我真想藏在座位下面去。
美
['ʌndərs'aɪd]
