英语翻译1.Whales and Dolphins Whales,dolphins and porpoises belo

英语翻译
1.Whales and Dolphins
Whales,dolphins and porpoises belong to the family of marine mammals known as cetaceans.Unlike fish,cetaceans are air-breathing,warm-blooded mammals that bear live young and nurse them on milk.Cetaceans play an important role in the life of the ocean,serving as flagships for the health and well-being of the whole marine ecosystem.
Completely adapted to life in the water,whales breathe through blowholes on top of their heads,which allows them to take in air without interrupting swimming.Of the great whales,the deep-diving sperm whale is the champion at holding its breath.The longest recorded dive by a sperm whale lasted over an hour,and these whales can descend to depths of more than a mile.Unlike fish,which swish their tails from side to side,whales swim by pumping their tails vertically,and using their flippers to steer.
Along with hunting,collisions with ships,and the degradation of their habitat due to pollution,the greatest threat to whales,dolphins and porpoises is entanglement in fishing gear,also known as bycatch.If current trends continue unabated,several cetacean species and many populations will be lost in the next few decades.With the support of its members and international conservation partners,WWF is working to ensure that whales,dolphins and porpoises will swim in our seas for generations to come.
2.Snow Leopards
The snow leopard is an endangered big cat that inhabits the rugged and mountainous terrain of Central Asia and the Himalayan region.It is currently threatened by hunting for the illegal wildlife trade and revenge killings by herders; habitat loss; and diminished food supply.A 2003 study by TRAFFIC,WWF and the International Snow Leopard Trust found a dramatic decline of the big cats in many countries over the previous decade.It is estimated these threats are reducing the snow leopard population to numbers approaching those of the endangered tiger.The remaining animals live in only 12 countries in South and Central Asia.
World Wildlife Fund supports research and habitat conservation projects for the snow leopard in many parts of its range.WWF is also working to put a stop to the illegal traffic in endangered cat skins,and to create and maintain reserves to protect them and other endangered species.With your help,we can save the snow leopard from an uncertain future.

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