The four Ps model is most useful when marketing low value consumer products.
营销低价值的消费者产品时，这个四个P的模型最管用。
Consumer confidence can suffer as investors at home watch the value of their holdings fall.
由于国内投资者看到他们持仓的价值不断下降，消费信心受到打击。
After exchange, the producer obtains value and the consumer use value.
交换过程完成后，商品生产者获得价值，消费者获得使用价值。
After exchange, the producer obtains value and the consumer use value.
交换过程完成后，商品生产者获得价值，消费者获得使用价值。
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