Disphenoid
复正方楔; 双半面晶形
🗣️ 情景例句
Yes. It's a lovely day and good enough to travel.
是的，天气很好，旅游是再好不过了。
Gifts from enemies are dangerous.
敌人礼，藏危险。
Good afternoon, class! Who's on duty today?
同学们，下午好！今天谁值日？