3 sentences

1. 美国的中西部地区以农业为主。

   Měi​guó de zhōng​xī​bù dì​qū yǐ nóng​yè wéi​zhǔ.

   The Midwestern United States is primarily agricultural.

   Source: Dong Chinese Dictionary

2. 政府的投资政策正向中西部地区倾斜。

   zhèng​fǔ de tóu​zī zhèng​cè zhèng xiàng zhōng​xī​bù dì​qū qīng​xié.

   The government's investment policy is tilting toward the central and western regions.

   Source: Dong Chinese Dictionary

3. 中国正致力于推动中西部地区的城镇化。

   Zhōng​guó zhèng zhì​lì​yú tuī​dòng zhōng​xī​bù dì​qū de chéng​zhèn​huà.

   China is committed to promoting urbanization in the central and western regions.

   Source: Dong Chinese Dictionary