山起着稳定地球外壳的作用的翻译：Hill played a role of stabilizing the Earth's crust 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Hill plays a stabilizing role in the earth's crust

Hill played a role of stabilizing the Earth's crust

The mountain plays is stabilizing the Earth outer covering role

Hill played a stabilizing role in Earth's outer shell

Hill played a role of stabilizing the Earth's crust