As share prices fall, margins decline and revenues may fail to cover fixed costs.

随着股价下跌，利润率下滑而且收入可能难以覆盖固定费用。

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An obvious explanation for the relationship is operational gearing; companies need a certain level of sales to cover their fixed costs and once that level is reached, margins rise substantially.

对此联系的最浅显解释便是经营杠杆。公司用于弥补固定成本的销售额是一定的，而达到该水平后，利润率将显著增长。

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Lower management fees may not cover their fixed costs, such as salaries, accommodation and IT.

较低的管理费用可能不能维持他们的固定成本，比如工资、租金和信息服务费用。

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As share prices fall, margins decline and revenues may fail to cover fixed costs.

ECONOMIST: Fund management

It became much more difficult to cover fixed costs or acquire inventory using a volume discount, so the result was a decrease in profitability.

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First, traditional retailers may need to think about closing more stores in 2012 as the least-trafficked outlets fail to generate enough sales to cover fixed overhead costs.

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