By firing intense beams of light at the documents, they can see what is written inside.

通过燃烧发出强烈的光束对着这些文件，他们可以看到里面写的内容。

A laser is a device that produces an intense beam of light.

激光是一种产生强光束的装置。

You could say: The purpose of the laser is to generate an intense beam of light.

你可以说：激光的目的是产生强烈的光束。

The pan-European project will generate intense neutron beams to study the structure of materials, using the most powerful linear proton accelerator ever built.

这个泛欧洲项目将使用有史以来最强大的线性质子加速器，产生强中子束研究材料的结构。