3 sentences

1. 这两座城市彼此相邻。

   zhè liǎng zuò chéng​shì bǐ​cǐ xiāng​lín.

   These two cities are adjacent to each other.

   Source: Dong Chinese Dictionary

2. 湘、鄂两省地理位置相邻。

   Xiāng, è liǎng shěng dì​lǐ wèi​zhi xiāng​lín.

   Hunan and Hubei provinces are geographically adjacent.

   Source: Dong Chinese Dictionary

3. 江浙两省紧密相邻。

   Jiāng Zhè liǎng shěng jǐn​mì xiāng​lín.

   Jiangsu and Zhejiang provinces are right next to each other.

   Source: Dong Chinese Dictionary