Although many of the voices in the marketplace and in the media are laying the blame on opportunist speculators, experts say their involvement is only one of the factors driving up apple prices.

尽管商场和媒体对投机取巧者责备声不断，但是专家说这些人的介入仅仅是苹果价抬高的一个因素。

youdao

Roya is making some of the world's most desired coffee beans scarcer and driving up their prices.

WSJ: Roya Fungus Hurting Central America Coffee Crops

If flat screens fall in price, the latter merely boosts demand for other goods thus driving up their prices.

FORBES: Brendan Brown, and The Global Curse Of the Federal Reserve

But the Chinese have beaten the Italians at their own game by setting up their own businesses and driving down prices by importing far cheaper fabrics from China.

BBC: The Italian fashion capital being led by the Chinese