A burst of sunshine sent a beam of amber light through the window.

一道阳光透过窗户射进了一束琥珀色的光。

《柯林斯英汉双解大词典》

TEMs work by firing a beam of electrons through the material and measuring how it absorbs and deflects the particles to build up an image of the sample.

TEMs 的工作原理是通过发射一束电子穿过某种物质，并测量它如何吸收和偏转粒子来建立样本的图像。

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You all know how when you take a crystal prism and pass a beam of sunlight through it, you get a spectrum, which looks like a continuous band of rainbow colors.

你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。

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If a beam similar to the original reference beam is shone through a hologram, the result is a three-dimensional image of the object scanned.

ECONOMIST: Researchers can now broadcast moving holograms

It transmits a laser beam through an optical cable to a robot, which angles lenses and mirrors in the end of its arm to aim the laser towards the parts that need welding.

ECONOMIST: Robots: Nothing to lose but their chains | The

To activate the altered neurons, they usually use a laser tuned to the proper wavelength and pipe the beam through a fiber-optic cable implanted in the brain tissue.

WSJ: Scientists Cast Light Onto Roots of Illness Deep in the Brain