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Porous solid mass is an important material base in the formation of debris flow.
松散固体物质是泥石流形成的重要物质基础。
youdao
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The base of the rock cracked and the whole mass toppled into the sea.
岩石的底部裂开了，整块岩石塌入海中。
youdao
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The base of the rock cracked and the whole mass toppled into the sea.
岩石的底部裂开了，整块岩石塌入海中。
youdao