A powerful blow; a wallop.

重击有力一击；

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This defeat was a powerful blow to the enemy.

这次失败是对敌人的有力的打击。

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Suing HTC may be a roundabout way to attack Google, but if successful, it would be a powerful blow against the search giant.

状告HTC可能只是拐着弯攻击Google的办法，但一旦有效的话，对这个搜索巨人也会是有力一击。

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While alarmists demonstrate comedic hypocrisy in their proffered rules for the global warming debate, they are nevertheless consistent when it comes to conjuring up contrived outrage whenever skeptics deal a powerful blow to their mythical consensus of scientists.

FORBES: As The Consensus Among Scientists Crumbles, Global Warming Alarmists Attack Their Integrity

The UBS report explains that while nuclear energy has suffered a powerful blow, and it is not clear when and how it will get back on its feet, GE will benefit, despite having built the generators, as its strong gas turbine business, along with its smaller renewable portfolio, will step in to cover the output gap generated from a diminishing inventory of nuclear power plants.

FORBES: The Case For GE: Gas Turbines

The sudden current of air was powerful enough to blow tiles and masonry from the home of Patricia Hills in Old Windsor, Berkshire.

BBC: Vortex from plane landing at Heathrow damages roof