3 sentences

1. 吉A是长春市的车牌代码。

   JíA shì Cháng​chūn Shì de chē​pái dài​mǎ.

   Ji A is the license plate code for Changchun.

   Source: Dong Chinese Dictionary

2. 长春市作为老工业基地，正在焕发新的活力。

   Cháng​chūn Shì zuò​wéi lǎo gōng​yè jī​dì, zhèng​zài huàn​fā xīn de huó​lì.

   As an old industrial base, Changchun is showing new vitality.

   Source: Dong Chinese Dictionary

3. 长春市朝阳区的商业街区不仅繁华而且整洁。

   Cháng​chūn Shì Cháo​yáng Qū de shāng​yè jiē​qū bù​jǐn fán​huá ér​qiě zhěng​jié.

   The commercial area in the Chaoyang District of Changchun is not only bustling but also clean and orderly.

   Source: Dong Chinese Dictionary