我尝试一下直译，欢迎高手指正。
These studies focus on the ultimate risk to consumption, which is defined as the covariance between an asset’s return during a quarter and consumption growth over the quarter of the return and several following quarters.
这些研究集中在对消费的终极风险，这个风险被界定为在一个季度内的资产回报和在这个回报的季度及后续的几个季度上的消费增长之间的协方差。
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