A second line of defense is a risk mitigation strategy, in this case blocking accumulation of the new material in the grain.

第二道防线是风险减轻策略，在这种情况下是阻止作物中新材料的积累。

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Overweight and obesity are defined as ''abnormal or excessive fat accumulation that presents a risk to health''.

体重过重和肥胖症系指“体现为健康风险的不正常或过量脂肪堆积”。

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Success often depends on the accumulation of risk.

成功，往往取决于冒险的积累。

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The longer the Fed pursues monetary expansion, the greater the risk associated with the accumulation of these bonds.

FORBES: Move up http://i.forbesimg.com t Move down

Therefore, in accordance with section 202(d) of the National Emergencies Act (50 U.S.C. l622(d)), I am continuing for 1 year the national emergency with respect to the risk of nuclear proliferation created by the accumulation of weapons-usable fissile material in the territory of the Russian Federation.

WHITEHOUSE: Notice -- Continuation of the National Emergency with Respect to the Risk of Nuclear Proliferation Created by the Accumulation of Weapons-Usable Fissile Material in the Territory of the Russian Federation | The White House

The order invoked the authority, inter alia, of the International Emergency Economic Powers Act (50 U.S.C. 1701-1706) and declared a national emergency to deal with the unusual and extraordinary threat to the national security and foreign policy of the United States posed by the risk of nuclear proliferation created by the accumulation of a large volume of weapons-usable fissile material in the territory of the Russian Federation.

WHITEHOUSE: Notice -- Continuation of the National Emergency with Respect to the Risk of Nuclear Proliferation Created by the Accumulation of Weapons-Usable Fissile Material in the Territory of the Russian Federation | The White House