.. The more they covary--they move together-- the less they cancel out.
共变的趋向越大。。。它们一同增减-,风险越不会抵消。
耶鲁公开课 - 金融市场课程节选
The more money a company borrows, the more risky the share becomes.
公司负债越多,股票风险越大
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