The universal uncertainty is the root of risk. Decision analysis under risk has been an active research field of decision theory.
现实世界中普通存在的不确定性是风险产生的根源，风险决策分析是决策理论研究的重要领域之一。
At this early stage of risk-analysis, who can say what the right decision is, yet all three of my friends feel under pressure to have the vaccination, as though there was no real choice in the matter.
在风险分析的早期阶段，谁能说正确的决定是什么，而我的三位好朋友感到注射疫苗的压力，好像在这件事上没有真正的选择。
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