And it doesn't have to be through the ears: this system uses an electrotactile grid on the forehead, so whatever's in front of the video feed, you're feeling it on your forehead.
而且不必通过耳朵： 这个系统使用前额的电触网格， 所以不管面前的录像是什么内容， 你都可以通过前额感应到。