Scientists have detected a previously unknown layer of partly molten （融化的） rock under the Earth’s crust （地殼）. It is believed that the discovery could help scientists learn more about the movements of Earth’s tectonic plates （地殼板塊）. Earth’s interior Earth is divided into three main layers: the crust, the mantle （地幔）, and the core （地心）. The crust is Earth’s outermost （最外層的） layer which we live on. It is made of ...Read More
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