Close your eyes and imagine a ball of energy moving up your spine and into your heart.

闭上你的眼睛，想象一个能量球正从你的脊柱往上移动并进入你的心脏。

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In the heart, action potential is moving from one heart muscle cell to another over the surface of the heart.

在心脏中，动作电位是在心脏表面从一个心肌细胞向另一个心肌细胞传递。

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Now as the energy grows in your heart, imagine it moving through your torso and into your legs and arms.

现在，随着能量在你的心里成长，想象它在你的躯干中移动，然后进入你的大腿和手臂。

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Now, in the heart action potential is moving from one heart muscle cell to another over the surface of the heart.

心脏中的动作电位,沿相邻心肌细胞在心脏表面传递

耶鲁公开课 - 生物医学工程探索课程节选

If you could image how the heart is moving, you would know a lot about its function.

如果你对心脏进行动态造影,你就会了解它的很多功能了

耶鲁公开课 - 生物医学工程探索课程节选

Some of them have to do with merely digesting food and moving the body around, and making the heart beat,and the lungs open and close.

有一些只负责消化食物或者身体活动，让心脏跳动，让肺部呼吸。

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