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从2001年至2014年，我国毒品犯罪活动以案件数量和涉案人数来看，总体 ()

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At night the desert floor radiates heat back into the atmosphere and the temperature may be drop to near freezing.

One of the wildest and most inaccessible parts of the United States are the Everglades where wildlife is abundant and largely protected.

During the Colonial days, the Iroquois had an agricultural economy basing mainly on corn with supplementary crops of pumpkins, beans, and tobacco.