The formation mechanism is the flowing water trace to the source erosion-rock collapse-ancient slope withdrawal.

形成机制是流水溯源侵蚀—岩石块体崩塌—谷坡后退。

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The formation mechanism is the flowing water trace to the source erosion-rock collapse-ancient slope withdrawal.

形成机制是流水溯源侵蚀—岩石块体崩塌—谷坡后退。

youdao