The material can absorb outward-going radiation from the earth.
这种材料可以吸收地球向外辐射的能量。
They actually account for almost all of the meteorite material that falls to earth.
它们实际上在落在地球上的陨石物质中占了接近总数。
The third concern is raw material exports, rare earth in particular.
第三个问题是原材料出口，具体就是稀土出口。
Finding a new planet and finding a new material on earth is a great harvest.
发现一颗新的行星和在地球上找到一种新的物质，是同样了不起的收获。
Hot, melted material from deep inside the Earth moves up to create new crust.
地球内部炽热和熔化的物质浮到上面形成了新的地壳。
Rice chaff and fine earth were used as a covering material.
三是用砻糠细土作覆土材料。
Rice chaff and fine earth were used as a covering material.
三是用砻糠细土作覆土材料。
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