The Amazon is one of Earth's most endangered ecosystems... 亚马逊是地球上濒临灭绝的生态环境之一
..helping safeguard the future of this most endangered animal. 这将帮助保护这种濒危动物未来的生存
To film the story of the most endangered freshwater dolphin, 为了拍摄最濒危的淡水河豚
Endangered, they number fewer than 2,000 individuals. 这种生物濒临灭绝 数量不足2000只
and help to protect this endangered species. 并有助于保护这种濒危物种
These endangered birds are visitors. They've come down from the north to escape the even colder conditions in Siberia. 这些濒临灭绝的鸟儿从更加寒冷的西伯利亚来访