它用方差之类的量度来描述风险，然而最真实的风险是从单独的一个观测结果发生的。因此方差是一种无法描写真实风险的易变状态。
It USES metrics like variance to describe risk, while most real risk comes from a single observation, so variance is a volatility that doesn't really describe the risk.
在一个艺术被认为应该是描写真人真事的年代，这幅画的诞生让世人感到震惊：它并不单单是对一般恶梦的简单描绘，而是对恶梦体验的一次真实再现。
In an age when art was supposed to depict an actual person or event, it came as a shock that this was a painting not of a nightmare, but of the nightmare as a generalized experience.
以描写真人真事为主的传记文学是否可以进行艺术加工？回答是肯定的。
Can the biographical literature mainly describing actual person and event have artistic treatment? The answer is affirmative.
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