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an undulating plain some 400km across formed of gently folded upper mesozoic nonmarine sediments including red-beds
人气:132 ℃ 时间:2020-02-05 10:20:27
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这不是句子 是一个 名词短语 an undulating plain 是名词 some 400km across是定语 formed of gently folded upper mesozoic nonmarine sediments including red-beds是过去分词短语作定语 短语意思 由 地表层稍微折...
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