octagonal shaft八角钻杆
octagonal cap八角帽
octagonal dome八角穹顶
Octagonal Courtyard八角庭院
octagonal hive八角形蜂箱
octagonal sensor八角环传感器
Octagonal Pagoda八角塔
octagonal beads八角珠
ADJ（形容词） Something that is octagonal has eight straight sides. 八边形的
...a white octagonal box.
...一个白色八边形箱子。