摘要：消费的奢侈性通常被认为与炫耀动机有关。
Abstract: Luxury consumption is always connected with motivation of flaunt.
邀请朋友到你家，而不是把钱花在奢侈性娱乐上。
Invite friends over rather than spending money on lavish entertainment.
经济危机时期，这些奢侈性消费的下降在某种程度上又导致实际GDP的下滑。
Spending on such luxuries partly drove the decline of real GDP during the latest recession.
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