求翻译：随着城垣的加固和扩大，在10世纪以前，曾先后被改称宋平、罗城、大罗城。是什么意思？

1010 Li Gong founder Li Chao Yun (ie, Li Taizu) moved the capital from Hoa Lu to this, naming Thang Long. With the reinforcement and expansion of city wall, in the 10 century, Cengxianhoubei renamed Song Ping, Rochester, large Rochester. Hanoi, capital of scale with the Yi Dynasty began in the 11th

The city wall of reinforcement and expansion in 10 century, previously, had been renamed Song Ping, Luo city, large city.

Along with city wall reinforcement and expansion, before 10 centuries, once successively is renamed Song Ping, Luo Cheng, the big Luo city.

As reinforcement and expansion of rampart, prior to the 10th century, has been renamed song ping, luocheng, luocheng.

With reinforcement and enlargement of the city wall, before the 10th century, had successively renamed as Ping, Luo Cheng, large the Luo 's Song.