natural flow

• 自然流动

natural flow的用法和样例：

例句

1. Openings in the glass facade and the ventilation shutters in the roof create a healthy natural flow and exchange of air.
   开口玻璃幕墙及通风百叶窗在屋顶创造一个健康的自然流动和交换的空气。
2. When water tumbles down a mountainside, this natural agitation fills the water with oxygen, charging it with electrons.
   水从山上流下来的时候，自然流动会使得它充满氧气和电子。