mantle rock造句怎么写
- 造句
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In the movie, world governments unite to build a manned craft that can burrow through2,900 kilometers of solid mantle rock and survive the core's scorching heat— comparable to that at the surface of the sun.
The research indicates that red clay and mantle rock soil, which distribute both sides of gully and with rich groundwater, are better for shallow-root tree to grow.
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