A new option has been added to control the specular highlight so that it only appears on the opaque surface and not the transparent surface.

添加一个新的选项去控制镜面高光，这样高光只显示在不透明的表面上，而不是透明的表面上。

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It will then self-destruct not in flames, its inventors hasten to add, but because contact with the air eventually renders its surface opaque, making it impossible for the laser in a disc player to read the data beneath.

ECONOMIST: A new twist on an old polymer

This rough surface also makes the material more opaque.

BBC: New material can halt runny liquids on demand