研究地区的西部、南部为大面积沙地的翻译：Research area west, South to the large area of sand 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

The western study area, a large area of ??southern Saudi

Research area west, South to the large area of sand

Studies local the west, south for the big area sand

Study Areas in the western, southern Saudi Arabia are large

Research area west, South to the large area of sand