lava

When the volcano erupted, a slow stream of glowing red lava destroyed several nearby houses.

(Chinese) 火山喷发时，一股缓慢流动的红亮熔岩摧毁了附近的几栋房屋。

The hikers explored the field of hardened lava that had formed after the previous eruption.

(Chinese) 徒步旅行者探索了上次喷发后形成的硬化熔岩田。