按英亩来算，有些保护区，例如那些位于雨林，热带草原或者红树林沼泽的地方- - -平均每亩保护的物种要比其他保护区多的多。
Acre for acre, some sanctuaries-such as those in rainforest, tropical grassland or mangrove swamps-offered a lot more species protection per acre than others did.
南非广阔的地貌囊括了热带草原、雪山、森林、热带沼泽无穷的海岸沙滩、宁静的河流和喧闹的都市。
South Africa's vast landscape includes seavannahs, snow-covered mountains, forests, tropical swaps, endless beaches, tranquil rivers and bustling urban centers.
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