Take flexible form to smooth the channel of medical supply.
三是应采取机动灵活的形式，确保药材补给通道的通畅。
Normal arteries are smooth and flexible, allowing oxygen-rich blood to flow through easily.
正常的动脉是光滑柔软的，携氧的血液能畅通无阻地在血管里流动。
Normal arteries are smooth and flexible, allowing oxygen-rich blood to flow through easily.
正常的动脉是光滑柔软的，携氧的血液能畅通无阻地在血管里流动。
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