你知道被评为“感动中国人物”之一的张桂梅吗？
Do you know Zhang Guimei, who was honored as one of the "People Who Moved China"?
一秒钟内可拍摄610万张照片，快门速度为440万亿分之一秒，在这么短的时间内光也只前进了不到一厘米。
It can take 6.1 million pictures in a single second, at a shutter speed of 440 trillionths of a second. Light itself moves just a fraction of a centimeter in that time.
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