销售下降最主要的原因在于，人们越来越担心发胖。
The main reason for the decline is growing concern about obesity.
在第一季度，麦当劳在华现有餐厅销售额下降，原因是降低了午餐价格，以避免顾客流失到价格更便宜的本土餐厅。
During its first quarter, McDonald's existing restaurants in China recorded a decline in sales as the company reduced lunch prices to stem the loss of customers to cheaper local alternatives.
报告声称，三大公司的汽车销售量由1999年的1150万辆下降到2007年的810万辆是其主要原因。
A main reason, according to the report, is that the firms' car sales fell from 11.5m units in 1999 to 8.1m in 2007.
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