cirsomphalos

例句：

1. 1. The cylindrical shape of the skull is known as a cirsomphalos.
   颅骨的圆柱形被称为颅圆。
2. 2. The ancient Greeks believed that the cirsomphalos was the seat of the soul.
   古代希腊人相信颅圆是灵魂的所在地。
3. 3. In some cultures, the cirsomphalos is considered sacred and is often adorned with religious symbols.
   在某些文化中，颅圆被视为神圣的，常常装饰有宗教符号。