与美国小学生一起学英文第7册 第12期:地幔
时间:2019-01-10 作者:英语课 分类:与美国小学生一起学英文第7册
英语课
We are living on the surface of the Earth. 我们生活在地球表面。
So, what is inside the Earth? 那么,地球内部是什么?
There is a mantle under the surface of the Earth. 地球表面以下是地幔。
The mantle takes up 84% of the Earth. 地幔占地球体积的84%
It is a rocky layer, and it covers the core of the Earth. 它是岩层,包裹着地核。
The mantle near the surface is like a bunch of hard rocks. 靠近地表的地幔就像一堆坚硬的岩石。
But the mantle near the core is boiling liquid rocks. 而靠近地核的地幔是炽热的岩浆。
When a volcano erupts, this boiling mantle comes out. 火山喷发时,炽热的地幔随之而出。
Also, the mantle heats up undergroud water. 而且,地幔会加热地下水。
Thanks to the mantle, we can enjoy a hot spa. 多亏有了它,我们才可以享受温泉。
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小学英语