熔岩向下流动时,无缝不钻,无孔不入.

The molten lava got into every nook and cranny on its downward path.

的向上或向下流动的市场，在一段时间。

The upward or downward movements of a market, during a period of time.

向下流动是一根不断缩短的导火线，将产生深远的影响。

Downward mobility is an ever-shortening fuse leading to profound consequences.

歌词大意： 滑动速度更快，时间要走，向下流动。

Sliding faster, time to go, Down with the flow.

高达20%的顶部气流应由侧壁向下流动。

Up to 20 percent of the top airflow should bleed off down the sidewalls.

从侧边再看一下，可以看到我们能够直接让病菌向下流动。

And same thing from the side, you'll notice we're able to directly push those pathogens down.