The surprising experiment I am about to describe proves that air is all around you and that it presses down upon you. Air pressure is a powerful force. When you swim underwater, you can feel water pushing down on your body. The air all around you does the same. However, your body is so used to it that you do not notice this. The pressure is caused by a layer of air called the atmosphere. This layer surrounds the Earth, extending to about five kilometers above the Earth’s surface.
The following experiment is an easy one that you can do at home. But make sure that you are supervised, because you will need to use matches. Now for the experiment！
What you need
•A hard-boiled egg without the shell
•A bottle with a neck slightly smaller than the egg
•A piece of paper
•A match
Method
1） Check that the egg will sit firmly on the neck of the bottle.
2） Tear the paper into strips and put the strips into the bottle.
3） Light the paper by dropping a burning match into the bottle.
4） Quickly sit the egg on the neck of the bottle.
Result
Astonishingly, the egg will be sucked into the bottle. Your friends will be amazed when you show them the experiment. But be careful when you handle matches.
Why it happened
As the paper burns, it needs oxygen and uses up the oxygen （air） in the bottle. The egg acts as a seal in the neck of the bottle, so no more air can get inside. This reduces the air pressure inside the bottle. The air pressure must equalize, so more air from outside must enter the bottle. The outside air pressure against the egg and then the egg is pushed into the bottle! This proves that air is all around and that it is pressing down on it.

我将要描述的这个令人惊奇的实验证明你周围有空气，它向下压着你。大气压力是一种强大的力。当你在水下游泳时，你可以感觉到水在向下推你的身体。在你周围的空气也是一样。然而，你的身体是如此的习惯它而不会注意到这一点。这个压力是由一层叫大气层的空气引起的。这一层空气环绕在地球周围，延伸到高出地球表面大约5千米的高处。
以下是一个可以在家做的简单验。但是确保是在别人监督下完成的，因为你需要使用火柴。现在来完成这个实验。
你需要的实验材料：一个已经煮熟的去掉蛋壳的鸡蛋；一个颈部略微比鸡蛋小的瓶子；一张纸；一根火柴。
实验方法：1）检查使鸡蛋能稳定地立在瓶子颈部
2）把纸撕成条状，并且把纸条放进瓶子中
3）把正在燃烧的火柴放入瓶子中点燃纸条
4）迅速把鸡蛋立在瓶子的颈部。
实验结果：令人奇怪的是，鸡蛋会被吸入瓶子中。当你给你的朋友演示这个实验时，他们一定会很是惊讶。但是当你握着火柴的时候，一定要小心。
为什么会发生这种现象：当纸燃烧的时候，需要氧气，它会消耗尽瓶子中的氧气。鸡蛋充当了封在瓶子颈部的封印，因此没有多余的空气可以进入瓶子内。这就减轻了瓶子中的空气压力。空气的压力必须得到平衡，因此更多的空气一定会从外界加入瓶子中。外界的大气压力作用在鸡蛋上，然后把它推入瓶子中！这就证明了空气到处都有，它就向下压在鸡蛋上。
（备注：经过1个多小时的翻译，总算完成如此长篇英语资料，翻译过程中严格遵循翻译规则，不落一词一句，谨希望能解学姐之急！）