求翻译：特别是2009年，在整体经济环境背景下，加之购置税优惠、以旧换新、汽车下乡、环保节能产品补贴等鼓励性消费政策的刺激，销量有了显著提高，超过美国成为世界第一汽车消费国是什么意思？

2009, in the context of the overall economic environment, coupled with the purchase of tax concessions, trade-in car to the countryside, environmental protection and energy saving products such as subsidies to encourage the stimulation of consumer policy, the sales have significantly increased, to o

In particular, in 2009, in the overall context of the economic environment, the acquisition of tax concessions, traded, car wraps, environment protection and energy subsidies, and other such products to stimulate consumption Policy, sales, and there is a significant improvement over United States as

Specially in 2009, under the whole economic environment background, added the purchase tax preferential benefit, by exchanges old, the automobile goes to the country, encouraging expense policy and so on environmental protection energy conservation product subsidy stimulations, the sales volume had

In particular, in 2009, in the context of the overall economic environment, coupled with the acquisition of tax incentives, trade-in, car to the countryside, environmental protection and energy saving products subsidies to encourage consumption, such as policy stimulus, there has been a marked incre

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