Now researchers at the University of Michigan have developed a sensor that can detect blood glucose levels in tears.

现在，密歇根大学的研究人员研究出了一种传感器，可以测量眼泪中的血糖含量。

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Many laser printers use an optical sensor to measure toner levels.

一些激光打印机使用光学感应传感器来测量墨粉余量。

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Today's trains are being equipped with increasing levels of measurement, control and protection systems, giving rise to multiple sensor locations and a battle to find the space for installation.

目前铁路对测量、控制和防卫系统的要求将越来越高，这就需要有装备多支传感器的位置，并找到装备这些传感器的空间。

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In recent weeks Dr Smith and Dr Sample, working with Scott Southwood, another researcher at the University of Washington, have built a weather sensor that measures temperature and light levels and sends a packet of data every five seconds by radio.

ECONOMIST: Monitor

The Sensiboil is fitted with a sensor in the oven's extractor fan, which detects humidity levels.

CNN: Sensor keeps cooking on the boil

With zero grams of activation force, Crescendo Sensor works at all angles and requires absolutely no calibration, providing hundreds of levels of pressure.

ENGADGET: Ten One ships $80 Pogo Connect, a pressure-sensitive Bluetooth 4.0 stylus for iPad