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英语翻译Nearly two hundred years ago,in France,two brothers stoo

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英语翻译
Nearly two hundred years ago,in France,two brothers stood watching smoke rising in the air.“ If we put some of that smoke in a bag,perhaps the bag would rise.” said one.“Yes,” said the other,“and if the bag was big enough,it might even lift us into the air,too.” The boys built a very large bag of paper and cloth.Under it,they made a fire.Soon the big bag began to fill up into a great round ball.It was the first balloon in the world.“We are right.” shouted the boys,“A bag full of smoke will rise.” But they found out later that it was not the smoke that made the balloon go up .It was the hot air from the fire.
差不多两百年前,在法国,两兄弟站在那里看着烟在空气中袅袅上腾.“如果我们把一些烟放入袋子里,也许袋会上升.”他们之中的其中一个说.“是的,”另一个说“,如果那个袋子足够大,甚至有可能载着我们,升上空中.”那两兄弟做了一个非常大的袋纸和布.然后,他们就起火.不久,大袋便开始被烟填补成一个大圆球.这是世界上第一个气球.“我们是说得没错.”男孩大叫道,“一个充满烟的袋子将会上升.”但他们后来发现那不是烟使气球上升的.这是火中的热空气造成的.