Disphenoid
复正方楔; 双半面晶形
🗣️ 情景例句
OK. But don't delay too long. Or that trip will be all booked.
好，但不要拖太久，否则会订满的。
The agricultural region is centered largely in the north.
那里的农业区大部分集中在北部。
After a short time a line of bees fly to and from the hive like a thin stream.
过不了一会儿，一队蜜蜂像一条小溪一样在蜂箱和喂食点之间来往飞行。