The inexperienced pilot flew the plane badly; it was off the beam most of the time.

那位没有经验的飞行员驾驶技术很差，飞机大部分时间都偏离了无线电讯号指示的航道。

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Researchers have discovered that concentrating a 'cold plasma' beam on soft fruit kills off the spores which cause mould. It can keep it away for up to a week.

研究人员发现集中一束冷等离子到变软的水果上可以杀死其中导致霉变的孢子，并且这种作用可以维持一个星期。

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This photomicrograph was obtained by scanning a beam of electrons across the sample while a detector kept track of electrons bouncing off its surface, betraying the specimen's outer shape.

这幅显微照片是通过扫描穿过样品的电子束而获得的，同时检测器对从样品表面反弹的电子进行追踪，这些电子显示了标本的外形。

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The carpenter singing his, as he measures his plank or beam, The mason singing his, as he makes ready for work, or leaves off work;

VOA: special.2009.04.12

After flipping off the beam, the judges gave her a score that put her in fourth place.

WSJ: Social Media

While the driving lights are the first use of a laser beam reflected off a mirror, the daytime running lamps, with their characteristic "torch" effect, and the indicator lights use LEDs.

ENGADGET: Mercedes-Benz GLA concept puts laser projectors in headlights, redefines SUV

The beam reflects off any objects, including people, within the area.

BBC: fire fighting