英文：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.
英文：The systematic propagation of a doctrine or cause or of information reflecting the views and interests of those people advocating such a doctrine or cause.
中文：宣传活动对一个学说、事业或信息的系统宣传, 其反映倡导该学说或该事业的人的观点和利益
英文：Glare that is caused by a shiny object reflecting too much light into a television camera.
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