Diversification: the reduction of risk achieved by replacing a single risk with a large number of smaller unrelated risks.

多元化：通过用大量不相关的小风险代替一种风险来降低风险。

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Doctor Yusuf said the single pill, taken once a day, could reduce the average person's risk of heart disease and stroke by about half.

VOA: special.2009.04.08

Cash bears a single risk, a single roll of the dice.

FORBES: Beware The Real Cost Of Your Cash Allocation

Based on a study of nearly 200 Vietnamese families affected by another infectious illness, the bacterial disease leprosy, he and his colleagues have identified a single gene as a strong risk factor for leprosy in children under 16 years old.

ECONOMIST: Genetics and infectious disease: The germ of an idea | The

Another poll indicated that a majority of Germans saw the European single market as a risk to their living and working conditions.

BBC: German bailout vote: Merkel's authority survives