西北部

例句：

1. 1. The northwest region is famous for its natural beauty and rich history.
   西北地区以其自然美景和丰富的历史而闻名。
2. 2. The company's headquarters are located in the northwest corner of the city.
   该公司的总部位于城市的西北角。
3. 3. The expedition set out from the northwest point of the island.
   这次探险从岛屿的西北部出发。