Finally, there's an inner ring of luminal columnar cells, which are within the lumen or center of the gland.

最后是一层管腔柱状细胞，位于管腔内或腺体中央。

Huge issues of fictitious stock, created purely for the benefit of inner rings, have been almost the prevailing rule.

纯粹为了内环的利益而发行的大量虚构股票几乎已成为普遍规则。

A population of 10,000  colonists could occupy the tube's inner ring, where cars and homes are held in place  by the torus's rotational gravity.

10,000 名殖民者的人口可以占据管道的内环，汽车和房屋被环面的旋转重力固定在适当的位置。