Liquid assets frequently have lower rates of return than fixed assets.

流动性强的资产通常比固定资产回报率低.

Finally, it discusses the influence of rates of return to education on educational policy planning.

最后则探讨教育收益率分析在教育政策规划应用之重要性.

Because it represents foreigners investing in United States and that generates rates of return that effectively can generate that growth.

其实这和外国人在美国投资的道理是一样的，投资带来的收益，是由美国来埋单的，因而，实际上也同样导致了美国债务的增长。

By group testing according to diversification degree, we find that overmuch diversification significantly reduces rates of return on total assets (ROA).

多元化程度分组检验，发现高度多元化对总资产回报率（ROA）有显著负面影响；