从森林到山坡上没有树木的苔原的过渡通常会十分突然和明显。
The transition from forest to treeless tundra on a mountain slope is often a dramatic one.
我穿过森林、淌过沼泽，经过石南和湿地，爬过山坡，又在荨麻杂草丛生的小径上向前迈进。
I hiked through forests and moors, through heather and swamps, alongside slopes and down small paths overgrown with stinging nettles.
GTGP是在1998年洪灾之后启动的，通过向农民提供粮食和现金补贴来把种植在陡峭山坡的作物改造为森林和绿地。
The GTGP, initiated in 1998 after massive floods, converts cropland on steep slopes to forest and grassland by providing farmers with grain and cash subsidies.
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