认识身体里的几个系统

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人体包含几个系统：血液循环系统（circulatory system），神经传输系统（nervous system），呼吸系统（respiratory system），消化系统（digestive system），骨骼+肌肉系统（skeletal&muscular system）。真难想象每个人的身体里有这么复杂的系统，并且时时刻刻都在工作。一旦某个系统罢工或者坏了，我们就立刻break down了。

Episode metadata supplied by the publisher feed · Published Oct 29, 2017

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认识身体里的几个系统

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