Where I found the glass aerolite was a sink hole long ago and it was fulfilled with outside materials through long long term.
我发现玻璃陨石卵石的地方就是一个古老的地下洞穴，后来被冲积物填平了。
Where I found the glass aerolite was a sink hole long ago and it was fulfilled with outside materials through long long term.
我发现玻璃陨石卵石的地方就是一个古老的地下洞穴，后来被冲积物填平了。
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