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The Secret Heart
已完结1 季3 集单集约 50 分钟美国英语National Geographic
In literature, the human heart is amongst the weakest muscles in the body, but in reality it takes it is one of the toughest. Taking a lot of stress and strain of our everyday lives, it continues to pump blood to the remotest cell in the body. But what happens when the something goes wrong with heart? Is there a method or a mechanism that can help us live with this mighty pump? National Geographic finds out.