### Chinese: 孙德本尔斯的面积为 3850 平方公里，其中约三分之一为水域/沼泽区。
### English: The Sundarbans has an area of 3,550 square kilometers, of which about a third is water/swamp.

### Improved English: The Sundarbans has an area of 3,850 square kilometers, of which about a third is water/swamp.
