测试性能：确保利用一个测试数据库来测试索引性能。
Test performance: Be sure to test the index performance with a test database.
20位低碳富豪中有9位来自太阳能产业，其中以保利协鑫的朱共山和尚德太阳能的施正荣为代表。
Nine of the entrepreneurs from the Hurun Low Carbon 20 made their money from solar energy, led by Zhu Gongshan from GCL-POLY and Shi Zhengrong from Suntech.
除了万科和保利，大多数的开发商都采取了谨慎的态度来销售土地。
Save for Vanke and Poly, most developers have taken a cautious approach to land sales.
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