An average record store needs to sell at least two copies of a CD per year to make it worth carrying; that's the rent for a half inch of shelf space.
一个音乐制品店，平均每张CD至少在一年中要卖出两张，才能收回这张CD所占用的半英寸货架的租金。
The value of such forecasts is not to be judged by their average record over several years, but by whether they signal problems and opportunities in advance of turning points.
这种预测的价值，并非体现在多年的平均记录，而是体现在能否在转折点之前显示出问题与机会的迹象。
The value of such forecasts is not to be judged by their average record over several years, but by whether they signal problems and opportunities in advance of turning points.
这种预测的价值，并非体现在多年的平均记录，而是体现在能否在转折点之前显示出问题与机会的迹象。
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