diffuse blur circle

例句：

1. 1. The oil spill has diffused into the surrounding water.
   石油泄漏已经扩散到周围的水域。
2. 2. The wind diffused the fog away from the city.
   风把雾吹散了，从城市中消失了。
3. 3. The chemicals were diffused through the air before they could be seen.
   这些化学物质在它们能被看见之前就已经通过空气扩散开来了。