'I was a little nervous about losing the ring,' recalls the property developer, who dropped to one knee inside a cavernous red-brick storm drain.

当时，在一个红砖砌成的暴雨排水洞内，他单膝跪下。他回忆道，“我有点担心会把戒指丢了。”

youdao

Brick retaining ring is functioned as a stopper for axial sliding of lining bricks and increasing the rigidity of kiln shell.

挡砖圈具有阻挡砖的轴向滑动和增加筒体刚度的作用。

youdao

The surface is brick red nonflammable coating and indicate a white ring at the behind of the precision color ring.

涂漆颜色为砖红色不燃性面漆，精度色环后增加白色环表示。

youdao

The ring of brick arches was constructed using the same techniques the Romans had perfected in the building of aqueducts, and it was completely clad in marble, now long since stripped away.

BBC: The classic wonders of Rome