25 Hot Air Balloons

Hot Air Balloons by DANIEL GREENBERG

丹尼尔·格林伯格的《热气球》

Chapter 1 Up, Up. and Away The year was 1783. A crowd came together in Paris, France. Ben Franklin was there. The king and queen of France were there, too, Suddenly, a big, round object rose in the sky. What was this thing? It was a hot air balloon. This was the world's first flying machine.

第一章向上，向上。那是1783年。 一群人聚集在法国巴黎。 本·富兰克林也在那里。法国国王和王后也在那里。突然，一个又大又圆的物体出现在天空中。 这是什么东西?那是一个热气球。 这是世界上第一架飞行器。

Chapter 2 The Dream The hot air balloon had been invented in France by the Montgolfier (mont-GAHL-fee-ay) brothers. Since long ago, people had dreamed of flying. But the Montgolfier brothers made this dream come true. The brothers noticed what happened in a fire. Paper would rise up a chimney. Was hot gas making it rise? The brothers filled model balloons with hot air. The models took off!

热气球是法国蒙戈尔菲(mont-GAHL-fee-ay)兄弟发明的。 很久以前，人们就梦想着飞翔。 但是蒙戈菲兄弟实现了这个梦想。 兄弟俩注意到了火灾中发生的事情。 纸会从烟囱里升起。 是热气使它上升的吗? 兄弟俩把模型气球装满了热空气。 模特们起飞了!

Who went on the first balloon ride? The Montgolfier brothers had promised their father they would not go. It was too dangerous. Instead, the first riders were a rooster, a sheep, and a duck. They all came home safely. Soon, other people built hot air balloons. In November 1783 the first people rode in a balloon. Flying had begun.

谁第一次坐气球? 蒙戈菲兄弟向父亲保证他们不会去。 这太危险了。相反，第一批骑手是一只公鸡、一只绵羊和一只鸭子。 他们都平安回家了。 很快，其他人也制作了热气球。 1783年11月，第一批人乘坐了气球。 飞行开始了。

Chapter 3 How a Hot Air Balloon Works Why does a hot air balloon work? Think of a beach ball. If you try to push the ball under water, it pops up. Why? The air in the ball is lighter than water. The lighter thing rises. The same thing happens with a balloon. The heated air in the balloon is lighter than the air around it. The balloon rises.

第三章热气球的工作原理热气球为什么工作? 想象一个沙滩球。如果你试图把球推到水下，它就会跳出来。 为什么?球里的空气比水轻。 较轻的东西上升。同样的事情也发生在气球上。 气球里的热空气比周围的空气轻。 气球上升了。