Specular reflection: The light that reflects off objects with a shiny surface.

镜面反射：光线从有光亮平面的对象反射回来。

youdao

It is important to uncheck the "Affect specular" slot, we don't want any specular reflection from that light, only diffuse light.

有一点很重要就是要取消掉“影响高光”的参数。我们不想这盏灯光产生高光，只影响漫反射即可。

youdao