电网面临的另一个挑战是涉及到远距离新兴电流从风和阳光充足的地方到不足的地方的传输。

Another challenge facing the grid involves the long-distance transmission of renewable electricity from places that receive a lot of wind and sun to those that do not.

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洛杉矶加州大学神经外科医生伊查克·弗莱德在其发表在《自然》杂志的论文中，就介绍过这么一个例子：弗莱德当时正在研究一名16岁癫痫少女的大脑，以寻找刺激其癫痫发作的发作根源，结果却发现了一个奇怪的现象：只要他给病人的左前叶（说到底就是一个不足1平方英寸的区域）施加电流，那个女孩就会笑出声来。

Take the case of a 16-year-old girl described four years ago in Nature by neurosurgeon Itzhak Fried of the University of California at Los Angeles.

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它的频率、电压及电流“不足以对健康的人造成健康问题，”Cademartiri解释说。

Its electric frequency, voltage, and current "are not sufficient to create health issues in a healthy person," Cademartiri said.

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