Animals waste and other chemicals flow into the ground and pollute water supplies.

动物粪便和其他化学物质流入地下，污染水源。

He said fertilizers, human waste and other chemicals flow into Lake Maracaibo.

他说，化肥、人类排泄物和其他化学物质流入马拉开波湖。

The more we like a song, the more of these chemicals flow through our body.

我们越喜欢一首歌，这些化学物质就越能流经我们的身体。