Having that ability to close off a chapter and move on is really, really important.

结束一个章节,并且继续向前的能力非常重要。

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Its role is to move molecules around in the body so that they're available to cells everywhere within your body regardless of how close they are to your skin, and we'll talk about that.

它能将分子输送到身体各处,供体内所有的细胞使用,而无论那些细胞多么靠近体表,我们会讲到这些的

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