4 sentences

1. 我下个月要去天津出差。

   wǒ xià gè yuè yào qù Tiān​jīn chū​chāi.

   I'm going to Tianjin on a business trip next month.

   Source: Dong Chinese Dictionary

2. 天津又称津沽。

   Tiān​jīn yòu chēng Jīn Gū.

   Tianjin is also known as Jingu.

   Source: Dong Chinese Dictionary

3. 他每天往返于北京和天津之间。

   tā měi tiān wǎng​fǎn yú Běi​jīng hé Tiān​jīn zhī​jiān.

   He commutes between Beijing and Tianjin every day.

   Source: Dong Chinese Dictionary

4. 天津滨海新区是国家级新区和经济中心。

   Tiān​jīn Bīn​hǎi xīn qū shì guó​jiā​jí xīn qū hé jīng​jì zhōng​xīn.

   Tianjin Binhai New Area is a national-level new area and an economic center.

   Source: Dong Chinese Dictionary