地心到底有多热？

The Earth is like a hot egg. 地球呀，像一颗热热的鸡蛋。 The inside of the Earth is very hot. 地球的肚子里，特别特别热。 The center is about six thousand degrees. 中心的温度，大约有六千度。 That is almost as hot as the sun's surface. 差不多和太阳表面一样热了。 We cannot go there to see. 我们可没法亲自去看一看。 Scientists know it from earthquakes. 科学家靠地震波测了出来。 The deep Earth is a big oven. 地球深处，就是一个大烤箱。