the hilly-gullied loess region

• 黄土丘陵区

the hilly-gullied loess region的用法和样例：

例句

1. Some suggestions are proposed for loess hilly area of south Ningxia.
   为宁夏南部黄土丘陵区生态恢复提出了几点建议。
2. The cultivation technique of major fine pasture in the semiarid and loess hilly area wasstudied and reviewed in details.
   比较详细地研究总结了半干旱黄土丘陵区主要优良牧草的栽培技术。