So the GMT, if you can imagine -- if I were to hold up a coin, which I just happen to have, and I look at the face of that coin, I can see from here the writing on the coin; I can see the face on that coin.
用GMT的话，你们可以想象一下， 如果我举起这枚我刚才碰巧得到的硬币， 我从这个距离看它上面的人脸，我可以看清 上面的文字以及肖像。