近来，随着债券边际收益率的提高，几家华尔街银行对潜在的借贷成本临界点发出警告。
As bond yields edged higher recently, several Wall Street Banks issued warnings about potentially crippling debt-service costs.
在最优监督水平下，作业公司的边际生产率越高，边际成本越低，越容易监督，监督带来的边际收益越高。
In the optimal supervision level, when contractor's marginal productivity is high and marginal cost is low, it is easier to supervise and the marginal revenue of supervision is high.
在最优监督水平下，作业公司的边际生产率越高，边际成本越低，越容易监督，监督带来的边际收益越高。
In the optimal supervision level, when contractor's marginal productivity is high and marginal cost is low, it is easier to supervise and the marginal revenue of supervision is high.
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