Traditional downtown Xian refers to the area encircled by the city wall, this has now been expanded to encompass the area within the second ring road (er 'huan Lu).

传统的市中心区是指被西安的城墙包围的地区，现在已经被扩大到包括在二环路的区域。

youdao

Today central Moscow lies inside the ring, but the city stretches well beyond.

如今，莫斯科市中心位于环城公路之内，但是城市的扩展远远超出了环城公路的范围。

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A young bullfighter has been arrested after running out of a Mexico City bull ring at the beginning of a fight.

墨西哥的一个斗牛场里，斗牛才刚开始，一位年轻的斗牛士便逃出了斗牛场。他也因此而被捕。

youdao

He had ousted a group called the Tweed Ring, which controlled New York City politics for years.

VOA: special.2010.03.04

"You are going to see an uplift of forces come in and I think you'll start to see this tightening ring of security in and around Kandahar city that I think will then provide the security bubble for governance to start to take in and development to start to take root in Kandahar city."

VOA: standard.2010.05.26

The canals that ring the city in tight concentric circles are lined with 3, 000 of them, moored to centuries-old stone quays.

FORBES: Playing the Float

All but 3, 000 of Jerusalem's 200, 000 settlers live in outlying neighbourhoods that ring the city and avoid the built-up areas where the city's 270, 000 Palestinians still live.

ECONOMIST: Jerusalem

Bells will ring across the city and state after the minute-long tribute to the victims.

NPR: Boston Marks Week From Marathon Bombs With Silence