| 释义 |
火山岩 huǒ shān yán
基本例句
lavavolcanicsvolcanianrhyoliteeruptive rockextrusive rockvolcanitevolcanic rockvolcanic
轻石，浮石一种在固体状时用作研磨物且粉状时用作磨光物和研磨物的轻多孔火山岩A light, porous, glassylava, used in solid form as an abrasive and in powdered form as a polish and an abrasive. |