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Dolphin babies have family tree

作者：21ST

给小海豚做家谱

At the Beijing Aquarium (北京海洋馆), there are three lovely dolphin babies. They have some exciting1 news for everyone. They have their own family tree (家谱)! Who makes the family tree for them? Their tamers (驯养员) do. Let's meet the dolphin babies.

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