obsidian
/əbˈsɪd.i.ən/
A black volcanic glass used for tools and decoration.
“She admired the sharp edge of the obsidian blade.”
新增到 My Deck
/əbˈsɪd.i.ən/
A black volcanic glass used for tools and decoration.
“She admired the sharp edge of the obsidian blade.”
新增到 My Deck