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A bird's-eye view （鳥瞰） captures （捕獲） the serpentine （蛇般蜿蜒的） course of a river in Peru’s mountainous Chachapoya region（秘魯查查波亞山區）. Herds of grazing cattle （一群群在吃草的牛）can be seen as tiny specks （小斑點） on the vast, green landscape （風景）.
A green tree snake peers （凝視）from its leafy perch in Costa Rica’s Caribbean lowland （哥斯達黎加的加勒比海低地. These tropical rain forests（熱帶雨林） surround the famed La Selva Biological Station（拉塞爾瓦生物研究站）, a center for ecological（生態） research.
A rare white alligator （白短吻鱷） swims at the Audubon Zoo in New Orleans （新奧爾良奧特朋動物園）. Albino （白化病） gators are ill suited (很難適應）for life in the wild because their pale skin offers little protection from the sun.
