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The ecological environment is extremely frail in karsts area.
这种特征致使岩溶地区的生态环境十分脆弱。
youdao
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The relationship of evolution between surface and subsurface karsts is very complicated.
地表和地下岩溶的演化极其复杂。
youdao
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The relationship of evolution between surface and subsurface karsts is very complicated.
地表和地下岩溶的演化极其复杂。
youdao