In theory, a country's equilibrium interest rate should equal its marginal return on capital.
从理论上讲，一国的平衡利率应该等于该国的资本边际收益率（资本收益的一种换算方式）。
What is the company's marginal tax rate?
什么是该公司的边际税率？
You pay on all that money during retirement when your marginal tax rate is less.
你付出的一切，当你的钱在退休边际税率较低。
You pay on all that money during retirement when your marginal tax rate is less.
你付出的一切，当你的钱在退休边际税率较低。
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