Dioctahedral
二八面体的(晶体结构)
🗣️ 情景例句
Matches.
火柴。
How's your brother?
你的兄弟好吗？
Alpine village tended to be impoverished settlements cut off from civilization by the high mountains.
阿尔卑斯山山区的小村几乎全是高山环抱、与世隔绝的穷乡僻壤。