When Brigida went out, she found the old man busy with putting a new beam along the wall.

当布丽吉特出去时，她发现老人正忙着沿墙安装一根新梁。

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One way to get round this limitation is to set up a laser in mid-air, its beam sampling the molecules along its path as it returns to the source.

避免这个局限的一种方法是在两者之间放置一个激光器，它的光束在返回光源时对途径的分子进行取样。

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The ISD infrared data transmission system enables wireless data transmission to rail-mounted vehicles along the light beam.

IS D红外数据传输系统可以使无线数据通过光束传输到钢轨车辆上。

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Android opens up the door to hundreds of thousands of apps, many of which are designed to make photos pop, on our own screens and millions more around the world, while also delivering simple access to sharing tools like Android Beam, WiFi Direct and DLNA, along with familiar Bluetooth options.

ENGADGET: Editorial: Android cameras -- could Samsung's Galaxy gamble save the point-and-shoot industry?

Walk along a wooded path and the Nao diffuses and dims its beam to give you a more expansive view of the terrain.

WSJ: The Petzl Nao: A Smarter Light | At Play

She is working on focusing the transmitted beam into a much smaller area, so that less energy is lost along its way.

ECONOMIST: Archaeology