三色性某些矿物质所具有的特性，当放在白光下从三个不同的方向观察，会呈现出三种不同的颜色
The property possessed by certain minerals of exhibiting three different colors when viewed from three different directions under white lights.
棱镜这种形状的透明体，多为玻璃制成，通常两端为三角形，用来分解穿过柱体的白光，使光束发生色散或用来反射光线
A transparent body of this form, often of glass and usually with triangular ends, used for separating white light passed through it into a spectrum or for reflecting beams of light.
白热的热得以致于发出明亮的白光
So hot as to glow with a bright white light.
