Volcanic activity has created thermal springs and boiling mud pools.
火山活动产生了温泉和沸腾的泥浆池。
《柯林斯英汉双解大词典》
2
The 1980 volcanic eruption of Mount Saint Helens, for example, sent mud and debris into several tributaries of the Columbia River.
例如，1980年圣海伦斯火山爆发，导致哥伦比亚河的几条支流产生泥石流现象。
3
The sample consisted of pebbles of hardened sediment that had once been soft, deep-sea mud, as well as granules of gypsum and fragments of volcanic rock.