hilly area

• 丘陵区

hilly area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 results are of significance to soil and water conservation in purple soil area.
   研究结果对川中紫色土丘陵区生态环境建设有重要参考意义。