natural flow的用法和樣例：
例句
- Openings in the glass facade and the ventilation shutters in the roof create a healthy natural flow and exchange of air.
開(kāi)口玻璃幕墻及通風(fēng)百葉窗在屋頂創(chuàng )造一個(gè)健康的自然流動(dòng)和交換的空氣。 - When water tumbles down a mountainside, this natural agitation fills the water with oxygen, charging it with electrons.
水從山上流下來(lái)的時(shí)候，自然流動(dòng)會(huì )使得它充滿(mǎn)氧氣和電子。
