Reducing their suitability for agriculture. 使它们不宜耕种

230. Nothing holds the soils back.
     土壤无法留在原地
231. The rainwater washes them down the hillsides as far as the sea.
     雨水把它们从山坡冲入大海
232. Erosion impoverishes the quality of the soils,
     将土地侵蚀得更为贫瘠
233. Reducing their suitability for agriculture.
     使它们不宜耕种
234. In some parts of madagascar, the erosion is spectacular.
     马达加斯加某地 侵蚀尤为显著
235. Whole hillsides bear deep gashes hundreds of meters wide.
     山坡布满数百米宽的深坑
236. Thin and fragile, soil is made by living matter.
     土壤由生命物质构成 单薄而脆弱

来自《家园 第二部分 Home Part2》第 233 行