lavas

例句:

• The lake was ponded by lavas a long time ago.
  这条湖是很久以前熔岩堵塞河道形成的.
  
• Such lavas also once came from the volcanoes in the Cascade Range in Washington.
  在华盛顿州的喀斯喀特山脉的火山也喷出过这样的熔岩.
  
• Previously, researchers had found nearby pillow lavas , bulbouslava flows that form - under water.
  以前, 研究人员在附近发现了形成于水下的枕状熔岩和球根状熔岩流.
  
• They're left behind when the lavas they grew in are weathered down to soil, where they can be recovered.
  来自SA