Moreover, engineers have worked out how to make laser beams more intense by using short lengths of optical fibre to narrow the beam.
此外，工程师们还通过光纤的短长缩小了传送的光束，由此找到了让激光传送器能源更加密集的方法。
Take laser transmission, for example. "High powers concentrated in a narrow laser beam could cause serious damage to a person, " says Karalis.
拿激光传输来说，卡拉里斯就称：“大量能量聚集成一束狭窄的激光束，可能会给人造成严重伤害。”
For this effect, we're going to use a very soft, narrow beam, so go under the Style pop-up menu at the top of the dialog (this is where the presets are) and choose Flashlight.
为了这个效果我们需要用到一个很窄的柔化光束。所以在对话框顶部的样式选择菜单中点选手电筒效果。
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