Light-line is one of the companies that will most benefit if new long-distance fiber-optic telecommunications networks are constructed.

如果建设新的长途光纤通信网络，Light-line 将是最大的受益公司之一。

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A laser beam like the one pictured up top combines short and long pulses of light to identify individual molecules with a high degree of precision from a safe distance.

一道激光射线由或短或长的光脉冲组合而成，从而能在一个安全的距离高精度地辨别单个的分子。

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In quantum cryptography, as in most long-distance data transmission, the information is carried by photons, the particles which compose light and other sorts of electromagnetic radiation.

光子是光线和其它种类电磁辐射的构成粒子，同大部分的远距离数据传输方法一样，量子加密法中信息是通过光子传输的。

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Designing them to light up an entire room or shine a beam over a long distance is far more technically challenging and requires higher production costs.

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