There's been much speculation on what's caused such a decline, but many credit a flooded market, the popularity of card-based games such as Pokemon, and of course, the rise of the Internet.

目前许多关于这种衰退是如何产生的推论，多数都归结为互联网这个新市场的兴起，现在流行的卡片是基于类似于口袋妖怪之类的游戏卡片。

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Tramp rates fluctuate with market conditions of supply and demand. In a boom period, the tramp rates rise; in a period of recession, they decline.

不定期船费率随航运市场的供求关系而波动。在市场繁荣时期，不定期船费率上升，在市场萧条时期，费率下降。

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Commodities, market and geographical environment were not the decisive factors in the rise and decline of Huizhou merchants.

商品和市场乃至地理环境不是徽商兴衰的决定性因素。

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As the securities of Portugal and Ireland decline in price and rise in apparent yield, it raises significantly the issue of marking to market the holders of Portuguese and Irish loans, which are also being carried at par.

FORBES: The Contagion Moves From Greece To Ireland To Portugal To Spain

In that sense, the rise and ultimate decline of the baseball-card market serves as a micro example of what happens in the economy every day.

FORBES: Political Economy