For a variety of reasons, something - such as a structural heart defect - causes the heart to beat out of control. This abnormal heart rhythm is known as ventricular fibrillation.

在这多种原因中，一些会导致心跳失常，比如结构性心脏缺陷，这种异常的心律被称作。

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Whether it was to help him literally beat the demons out of his life or he just wanted to do something different for a time, Rourke went undefeated in 8 matches as a boxer.

无论他是战胜了人生中的恶魔或只是想暂时做点别的，洛克在8场比赛中未尝一败。

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The physical setting, usually urban, can be spare, maybe a bit beat-up, something out of a Raymond Chandler novel.

FORBES: Social Networking for Men, Old Style

Rio de Janeiro beat out Chicago, Tokyo and Madrid to become the first South American city to host the Games, something President Luis Inacio Lula da Silva made clear during his pitch to the International Olympic Committee.

CNN: Brazilians celebrate Olympics bid in Rio de Janeiro