prism
n. 棱镜；[晶体][数] 棱柱
复数 prisms
例句
Light is refracted when passed through a prism.
光通过棱镜时产生折射。
《牛津词典》
A spectrum is formed by a ray of light passing through a prism.
一束光通过棱镜就会形成光谱。
This light is passed through a prism, which breaks it up into a spectrum.
这种光通过棱镜，而棱镜把它分割成了一道光谱。
