Our technologies have advanced over the last 20-plus years to include lasers that fire out of the bottom of the aeroplane and those laser beams image the land surface.

在过去的20多年里，的技术不断进步，这包括从飞机底部发射的激光，这些激光束可以拍摄陆地表面的图像。

Four months ago, we used freaking laser beams to recreate the conditions inside of a star, achieving more energy out of a nuclear fusion reaction than we put in.

4 个月前，用超厉害的激光重建恒星内部的环境，由核聚变产生的能量超过输入的能量。

They're big laser beams, about 40 by 40 centimeters.

这些巨大的激光束，大约40×40厘米。

These two traits give laser beams all kinds of special abilities.

正是这两个特性，让激光束拥有各种特殊的能力。

A laser beam passing through a jet of helium forms a stream of electrons, and a thin metal foil blocks their way.

激光束通过氦射流形成电子流，层薄金属箔挡住它的去路。

Why isn't that laser beam cutting through the paint?

激光束为什么切不断烤漆？

And the sun is your energy and the laser beam of light is your focus.

太阳是你的能量，激光束就是你的专注度。

Eventually, the laser exits the emitter and is passed on to the galvo head, where it's reflected by two mirrors moving as fast as 10,000 millimeters per second, which guide the laser beam to its target.

最终，激光离开发射器，被传射头，在那里，它被两面以每秒 10，000 毫米的速度移动的镜子反射，这将激光束引导目标。

The beam itself will be produced by a device called a fibre laser, this generates the coherent light of a laser beam in the core of a long, thin optical fibre.

激光波束本身将由光纤激光设备产生并在个细长的光纤核心产生激光束的相干光。

A similar method -- but one considered less dangerous -- would involve shooting laser beams from a spacecraft to destroy the side of an asteroid in an effort to push it away from Earth.

种类似的方法——但被认为不那么危险——将涉及从航天器发射激光束来摧毁小行星的侧，试图将其推离地球。

Scientists from around the world queue up for months just for a chance to blast a tiny sample of matter with a laser beam.

这是工厂的时间表。来自世界各地的科学家排几个月的队，只是为有机会用激光束轰击个微小的物质样本。

These reflectors are used today to reflect back laser beams emitted from Earth, such as this one behind me.

这些反射器现在被用来反射从地球发射的激光束，比如身后的这个。

A green laser beam stretching almost four kilometers across the city sky will stay lit during the entire festival.

整个节日期间，束横跨天空近四公里的绿色激光束将保持点亮状态。

They plopped this rod into a beaker of water and hit it with a laser beam from below.

他让这个翼状杆落入盛有水的烧杯中，并用激光束从底部击中它。

Measuring its thickness is trickier. From orbit, this is done by a mixture of radar and laser beam.

测量冰的厚度则更加棘手。在轨道上，这是由雷达和激光束共同完成的。

This form of the molecule is inert until hit with energy from the intersection of two laser beams.

这种形式的分子是惰性分子，需要两种电流交汇，在分子处对其进行刺激。

When necessary, they can focus it like a laser beam; when not, creative types immediately recharge their batteries.

有必要时，他就能像激光样专注；没必要时，富有创意的人就会立刻开始充电。

A robotic alternative known as the " Agrilaser" randomly deploys sweeping laser beams to keep birds away.

款名为 Agrilaser 的驱鸟机器随机扫射激光束来驱赶鸟儿。

The laser beam is born in these machines down in the basement, and it's directed through a maze of lenses and devices that shape and monitor it.

激光束在地下室的这些机器中产生，并通过迷宫般的透镜和设备来塑造和监控它。

Oh, hi. What's going on? We're up on the roof bouncing laser beams off the moon.

嘿 怎么 在屋顶上尝试从月球将激光射回来呢。