You direct this beam of light onto an object, your computer work, for example.

你把这束光照射到一个物体上，例如你的计算机工作。

She illuminated her wand and directed its narrow beam across the path.

她把魔杖点亮了，用那道狭窄的光柱照着小路。

The first option is to direct the electron beam to trace out shapes.

第一种选择是引导电子束描绘出形状。