3 sentences

1. 老城区广场是布拉格的心脏。

   lǎo chéng​qū guǎng​chǎng shì bù​lā​gé de xīn​zàng.

   The Old Town Square is the heart of Prague.

   Source: CCMatrix

2. 曼哈顿是纽约市五个城区之一。

   màn​hā​dùn shì niǔ​yuē​shì wǔ ge chéng​qū zhī​yī.

   Manhattan is one of New York City’s five boroughs.

   Source: CCMatrix

3. 空气污染在城区已不是什么新鲜事了。

   kōng​qì​wū​rǎn zài chéng​qū yǐ bù​shì shén​me xīn​xian​shì le.

   Air pollution in urban areas is nothing new.

   Source: CCMatrix