我们在Pre内发现了一个液体潜水传感器，通过micro USB接口可见。
We identified a liquid submersion sensor in the Pre, visible through the micro USB port.
当发射光照到相机的传感器上时，每个像素点抓取一个特定的波长，并对匹配波长的光线进行电子放大。 从仅有几个光子的微弱的原始信号，放大到可见的强度。
That amplifies the original dim signal, composed of just a few photons, until it becomes visible.
这些计算可能基于可见性(标签是否位于传感器的视线中)、信号强度或者信号从标签发送到传感器的时间量。
These calculations might be based on visibility (whether the tag is in the sensor's line of sight), the signal strength, or the amount of time it takes the signal to travel from the tag to the sensor.
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