But if we were to turn the Giant Magellan Telescope, all 80-feet diameter that we see in this auditorium, and point it 200 miles away, if I were standing in São Paulo, we could resolve the face of this coin.
但如果我用GMT来看的话， 我们在这会堂里用直径80英尺的GMT， 把它对准200英里以外， 如果我站在圣保罗， 大家也依旧可以看清这枚硬币。