英语翻译There are thousands of volcanoes all over the world.What

英语翻译
There are thousands of volcanoes all over the world.What makes
volcanoes?What happens?
The inside of the earth is very hot.Because it is very hot,the rock has melted like ice.It has become liquid,like water.It is always boiling,like water in a kettle.If you have seen a kettle boiling,you know that the steam and boiling water try to get out.The very hot melted rock inside the earth also tries to get out.Usually it cannot because the outside of the earth is too thick and strong.
But in some places the outside of the earth is thin and weak.Sometimes a crack （a small opening） appears.The hot melted rock ,which we call “lava”,pushes up through the crack and bursts through .Steam and gas shoot up into the air and the hot melted lava pours out.Big pieces of rock may be thrown high into the air.
After a while the volcano becomes quiet again.The melted lava becomes hard.Later the same thing happens again and again.Each time more hot lava pours out on top of the cold lava and then becomes hard.In this way a kind of mountain is built up,with a hole down the middle.
Although there are thousands of volcanoes in the world,most of them are dead.Only about 500 sometimes start to throw out lava again.A famous volcano which is now dead is Mount Fujiyama inJapan.It is covered with snow on winter.
Vesuvius is the name of a very famous volcano in Italy.It first came to life many,many years ago.It was quiet for hundreds of years.Then in the year 79 it suddenly burst.This has happened again many times since that year.Sometimes no damage was caused or only little damage.But there was serious damage in the years 472,1631,1794,1861,1872 and 1906.

在世界各地遍布着成百上千的火山.火山是怎么出现的,发生了什么.
地球的内部十分热.因为它温度很高,岩石都像冰一样的融化了.他变成了液体,像水一样.它经常像水壶中水一样沸腾.如果你看见壶中的水沸腾,你知道水蒸气和水将要跑出来.在地中心溶化的岩石也想要跑出来.通常它们不会跑出来是因为在地表的岩石又厚又坚硬.
但是在一些地方,地表的岩石又薄又脆弱.有时会出现一条裂缝.那高温溶化的岩石,我们就它岩浆,冲破裂缝流出来.热气充满空气,溶化的岩浆喷射出来.大量的岩浆灰冲入空气中.
过了一会,火山恢复了平静.溶化的岩浆开始变硬.不久后,这样的事重复发生了一次又一次.每次,高温的岩浆喷射出来覆盖在冷却了的岩浆上面,变硬.就这样,一座中间空的山就形成了.
虽然有有成百上千的火山遍布世界各地,但大部分都是死火山.只有500次开始再喷射岩浆.（Only about 500 sometimes start to throw out lava again我觉得这句和上下文不搭,不知道是不是打错了啊,不管了,我就照着翻得了）现在最出名的死火山是坐落在日本的富士山.在冬天,它总被雪所覆盖.
维苏威火山是一座在意大利的非常出名的火山.它第一次活过来是在很久以前.它沉睡了上千年.在79年它突然爆发了.自从那年就发生了好几次.有时没有造成或只造成了一点的损失.但是在472年.1631年.1794年.1861年.1872年和1906年造成了很严重的损失.