1752年6月的一天,美国费城郊区,乌云密布,电闪雷鸣,在一块宽阔的草地上,有一老一少两个人正兴致勃勃地放风筝。突然,一道闪电劈开云层,在天空划了一个“之”字,接着嘎嘣一声脆雷,雨点就瓢洒盆泼般地倾下来了。只见老者大声喊道:“威廉,站到那边的草房里去,拉紧风筝线。”这时,闪电一道亮过一道,雷鸣一声高过一声。突然威廉大叫: One day in June 1752, the suburbs of Philadelphia, the United States, covered with dark clouds and thunderstorms. There was an old man and a young man flying a kite on a wide grass field. Suddenly, a lightning split the clouds, drew a “” word in the sky, followed by a grizzled thunderstorm, and the raindrops dipped into the shower. I saw the old man shouted: “William, stand to the other side of the hut to tighten the kite line. ” At this time, lightning one bright, thunderous one soon after. William suddenly shouted: