人们曾经相信，步行速度超过每小时30英里，人类就会因血液循环停止而死亡。

Do you know that people used to think that if human beings traveled faster than 30 miles an hour, it would stop our circulation of blood and kill us?

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以前的研究已经表明地震，战争甚至是世界杯的失利都能因脉搏停止导致死亡率的上升，心脏停止血液循环。

Previous studies have shown that earthquakes, war or even the loss of a World Cup Soccer match can increase rates of death from sudden cardiac arrest, in which the heart stops circulating blood.

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快速的、不协调的抽搐运动，代替了心脏正常的有节奏的收缩而且可能引起暂时的血液循环及脉搏的停止。

Rapid, uncoordinated twitching movements that replace the normal rhythmic contraction of the heart and may cause a lack of circulation and pulse.

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