An invisible infra-red beam is superimposed over the image and sensors detect the reflections that are created whenever and wherever the image is touched.
有一束看不见的红外线被叠加在了画面上；不论何时、不论何出图像被触摸到，传感器都会侦测出反射。
An invisible infra-red beam is superimposed over the image and sensors detect the reflections that are created whenever and wherever the image is touched.
有一束看不见的红外线被叠加在了画面上；不论何时、不论何出图像被触摸到，传感器都会侦测出反射。
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