Along the way, we despoiled most of the land we worked, often turning verdant, natural ecozones into semi-arid deserts.
一路上，我们破坏了大多数我们曾经耕作过的的土地，经常把翠绿的自然生态区变成了半干旱的沙漠。
2
Climate change, it says, will make food even scarcer in semi-arid countries such as Sudan.
该机构表示，气候变化让半干旱国家(如苏丹)的粮食更为稀缺。
3
Rain was likely to become more intense and variable in many places, and farmers in the arid and semi-arid tropics were likely to become more vulnerable.