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美国时间2017年8月21日，美国全境将有希望见到日食，部分地区可以见到日全食，各位在美国的朋友，好好观赏，记得带日食眼镜。 (CNN)On Monday, the moon's shadow will block the sun from view in a total solar eclipse. （CNN）星期一，从日全食方位看，月亮的影子将会遮住太阳。
Wherever you are in the United States, you're going to want to look up, and that's OK. Every astronomer in the country will tell you to enjoy this rare opportunity. Nomatter what superstitions you've heard, there is no risk to your health due to simply being outside during a total solar eclipse. 不管你在美国哪里，你都能抬头看到日食。这个国家的每一个天文学者将会告诉你，享受这次难得的机会。不管你听到什么迷信，在日全食出现期间，仅仅因为在外面，不会影响你的健康。
But there'sone thing you shouldn't do, and that's look at the sun with your naked eye. 但是，有一件事你不应该做，那就是用肉眼看太阳。 Don't do it.Really. 不要这样做。真的。 The only time you can look at the sun with your naked eye is A) if you're in the path of totality, where the sun will be completely covered by the moon, and B) during those two minutes or less when the sun is completely covered. 你可以用肉眼看太阳的唯一一次机会是，A)如果你正位于日全食的地方，那里太阳将会完全地被月亮所挡住，和B)在太阳完全完挡住的时间里，大约2分钟或者更少。
During thosebrief and geographically constrained moments, the brightness of thesun is reduced to that of a full moon, which can be viewed safely withoutanything over your eyes. 那些短暂而受地理位置限制的时间里，太阳的亮度被减少到一个满月的亮度，可以不带任何护眼设备，安全地观看日食。
Otherwise, any glimpse of the sun's brightness is not only uncomfortable, it's dangerous. 否则，看到任何太阳的亮度不仅使人不舒服，而且是危险的。
What happens if you ignore the warnings? 如果你不顾警告会发生什么事呢? Your face won't melt off, "Raiders of the Lost Ark"-style,but your eyes could be severely damaged. And, yes, you could go blind. 你的脸不会融化（《夺宝奇兵》式），但是你的眼睛会严重损害。是的，你会变瞎。
Looking directly at the powerful brightness of the sun can cause damage to the retina, the light-sensitive part of the eye. 直接看亮度强烈的太阳，会造成视网膜的损伤，视网膜是眼睛的感光部分。
So you need eclipse glasses. 所以你需要日食眼镜。 感谢阅读！ |
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