Here a child in Nepal drinks from a well containing water contaminated with arsenic, which can lead to abnormal heart beat, blood vessel damage and cancer, among other ill effects.

图中是尼泊尔的一个小孩从一口被砷污染的水井中汲水喝，这种水会导致心率失常，血管损坏和癌症等其他疾病反应。

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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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We are looking to see how many awakenings they've had, but very importantly we also are looking at other problems with the heart beat, or looking for any kind of abnormal brain wave activity.

我们观测病人在测试过程中醒来的次数、心跳情况，和所有异常的大脑活动情况。

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