An automatic table tennis ball server is designed by using infra-red sensor and a few electric devices.

利用红外光传感器和较少的电子器件，设计了一种乒乓球全自动供球器。

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Your Sensor Tower (placed on the ramp at the front of your base) makes all enemy units within its sweep radius appear as red blips on your minimap.

你的感应塔(造在你基地前面高地的那个)让任何在其扫描范围内的敌方单位以一个红圈的形式出现在你的小地图上。

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By analysing data from a sensor that detects light in both the visible and the near-infra-red spectrum, a computer is able to determine the colour, type, shape and position of each item.

另外，内置传感器可在可视光谱与似乎红外光谱下探测到光线，计算机通过分析传感器的数据后便能够决定每个物件的颜色、类型、形状与位置。

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Night-vision lets the driver see up to five times as far, using a passive infra-red sensor.

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The Predator comes equipped with radar, seven video cameras, an infra-red sensor and a powerful zoom.

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Patrons can browse through a menu on their table, or type text, with the help of that all-important infra-red sensor, with the information sent back to waiting staff.

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