big area of Southwest的用法和樣例：
例句
- Wuming, being one of the important landways of the Southwest China to the sea, has highways extending in all directions.
武鳴境內公路四通八達，是大西南陸路出海的重要通道之一。 - Thus Guigang has escalated into an important port city in Southwest China to connect Hong Kong, Macao, Taiwan and overseas countries.
貴港已經成為我國大西南通達港澳臺及海外的重要口岸城市。
