求翻译：2011年，在“调结构、稳物价”的大背景下，中央政府继续加强房地产调控，全国投资、新开工增速高位回落，商品房销售面积和销售额再创新高，但调控效果在限购城市显现，成交量下降，百城价格指数连续3个月下跌。是什么意思？

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In 2011, the structure, and the prices, the central government under the context of the larger real estate market continues to strengthen regulation and control, the national investment, new construction, increase the speed dropped the sales area and sales to new heights, however, regulation and con

In 2011, in “adjusts the structure, the steady price” under the big background, the central authorities continue to strengthen the real estate regulation, the national investment, the new operation speed-up top digit recede, the commodity apartment sale area and the sales volume create new high agai

In 2011, "structure, stable prices" in the context of, the Central Government continued to strengthen the regulation of real estate, national decline of high growth in investment, new construction, residential sales area, and reached another all-time high in sales, but effects on the restriction of

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