You might think it's because of this synergy that they don't take into account correctly.
你可能认为这是因为,他们没有正确的考虑协同的作用
The circulatory system which we'll talk about in a couple of weeks, the heart, the blood vessels, and the blood work together to form a totally internal function.
例如过几周我们要讲的循环系统,心脏,血管,血液,三者协同工作,形成一个完全在体内发挥作用的体系
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