ennead

The curator chose an ennead of sculptures for the hall, arranged in three rows.

用法提示：此处 ennead 是名词，表示“九个一组”，在句中作宾语。

For the game, we formed an ennead of players and split into three small groups.

用法提示：此处 ennead 是名词，指“九个人一组”，在句中作宾语。

The ancient temple had an ennead of stone pillars supporting its roof.

用法提示：此处 ennead 是名词，意为“九个一组”，在句中作定语修饰 of 后的名词。