on 19th september 1783 翻译全文 谢谢

on 19th september 1783 翻译全文 谢谢
On 19th September 1783, Pilatre De Rozier, a scientist, sent the first hot air balloon. The passengers were three animals and the balloon stayed in the air for about 15 minutes before hitting back to the ground.
The first manned（载人 的）flight was about 2 months later, with a balloon made by 2 French brothers. The balloon flew for a period of 20 minutes.
Sailing through the sky in the balloon, high above buildings and trees, you can’t feel or hear the wind because you’re traveling in the same direction and at the same speed as it is.
A hot air balloon has three main parts: the balloon, called an envelope; a basket, where passengers ride; and a burner system, which supplies the hot air.
Most balloon envelopes are made of strong, lightweight nylon（尼龙）. They are different in size and
shape, but they have to be really, really big to lift even one person. Most weigh more than an adult
man.
The basket is usually made of wicker（柳条）, which is strong but not too hard. It needs to bend a
bit for a soft landing, just like a good jumper bends her legs instead of keeping them straight when
she lands.
The hot air balloon works on the theory that hot air rises faster than cooler air. When the burner
system is turned on, it makes a noisy sound, but once the balloon is flying, the burner can be turned
off. The air in the envelope will then cool, and the balloon will slowly go down unless the pilot starts
the burner system again.
To control a hot air balloon, a pilot adds hot air to it to go up or lets the air out to go down until he
finds a wind blowing in the direction he wants to fly. But no matter which way the wind blows, the
passengers have an amazing bird’s
-eye view of the world

在1783年9月19日,科学家,Pilatre De Rozier 发送了第一个热气球.乘员是三只动物,气球在坠落前停在空中约15分钟.第一个载体飞行是大约2个月后,由二个法国人兄弟完成,气球飞行了大约20分钟上.
乘热气球在空中飞行,高于建筑和树木,你感觉不到也听不到风,因为你正用同样的速度和方向行进.
热气球有三个主要部分：气球,也叫包膜,一个装乘员的篮子,和一个燃烧系统,用来提供热气.大多数包膜用轻而结实的尼龙制成,它们尺寸和形状各不相同,但它们必须相当相当大到足够提起一个人.大多数情况下超过一个成人的重量.篮子用柳条编成,它结实但不硬.它需要略微弯曲些以方便软着陆.就象跳起落地时双腿弯曲而不直着一样.
热气球的原理是热空气比冷气轻.当燃烧系统启用时,它产生很大噪音,但气球飞行时,燃烧系统可以关闭.包膜里空气冷却后,气球开始慢慢降落,除非再次启动燃烧系统.
控制气球时,飞行员加热空气使它上升或放出热气使它下降,直到找到想要的风向.但是不管风怎么吹,乘员都能鸟瞰神奇的大地.