To be sure, this is not easily corrected by legislation, although it might be possible to have useful rules of thumb about the appropriate ratio of full damages to lost earnings.

但这很难依靠立法来解决也是很确定的，尽管凭经验得来的损害赔偿-收入损失比例可能很有帮助。

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Scientists have calculated that globally the ratio between the amounts of useful plant food used to produce meat is about 5 to 1.

科学家们计算出全球用于生产肉食的植物性食物数量比例达到5比1。

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For any given portion of air, the greater expansion ratio allows more energy to be converted from heat to useful mechanical energy meaning the engine is more efficient.

对于任何给定的空气部分，更强大的扩展比允许更多的精力从热量转换为有用的机械能，这意味着发动机效率更高。

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Given this, it would seem logical that ROE would be a useful ratio for identifying stocks likely to outperform in the future.

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On the other hand, the price-to-book ratio is a useful measure of value, and most researchers agree that this ratio is strongly correlated with stock price performance.

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The cash dividend payout ratio is particularly useful for evaluating the staying power of dividends from companies undergoing massive business model overhauls.

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