来自《家园 第0集》
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With no vegetation and no roots to reinforce them,没有植物和根茎的加固 -
Nothing holds the soils back.土壤无法留在原地 -
The rainwater washes them down the hillsides as far as the sea.雨水把它们从山坡冲入大海 -
Erosion impoverishes the quality of the soils,将土地侵蚀得更为贫瘠 -
Reducing their suitability for agriculture.使它们不宜耕种 -
In some parts of madagascar, the erosion is spectacular.马达加斯加某地 侵蚀尤为显著 -
Whole hillsides bear deep gashes hundreds of meters wide.山坡布满数百米宽的深坑 -
Thin and fragile, soil is made by living matter.土壤由生命物质构成 单薄而脆弱 -
With erosion, the fine layer of humus,数千年形成的腐殖质图层 -
Which took thousands of years to form, disappears.因雨水侵蚀消失殆尽 -
Here's one theory of the story of the rapa nui,拉帕努伊岛[复活节岛的俗名]的故事 -
The inhabitants of easter island,岛上居民的遭遇