目前，中国有四分之一的陆地是沙漠，主要集中在西部和北部地区。并且沙漠面积还以每年5千平方公里的速度在不断地扩大。

Currently, a quarter of China is desert, an area that is expanding by around 5,000 square kilometres a year, north and west.

youdao

目前，中国有四分之一的陆地是沙漠，主要集中在西部和北部地区。并且沙漠面积还以每年5千平方公里的速度在不断地扩大。

Currently, a quarter of China is desert, an area that is expanding by around 5,000 square kilometres a year, north and west.

youdao