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来源：雅诚德英语网
How did those dense southern Maya populations deal with the resulting water problem?
玛雅南部人口这么秘籍，他们是如何应对由此产生的水问题的？
How did those dense southern Maya populations deal with the resulting water problem?
玛雅南部人口这么秘籍，他们是如何应对由此产生的水问题的？