1. Baboons have a large head, cheek pouches, and a long, doglike muzzle.
狒狒头部硕大，有颊囊，鼻口部狭长似狗。
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2. Baboons have a large head, cheek pouches, and a long, doglike muzzle. They walk on all fours, carrying the tail in a characteristic arch.
狒狒头部硕大，有颊囊，鼻口部狭长似狗。以四肢行走，行走时尾巴呈特有弓形。
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3. Recently unearthed fossils trace whales to a doglike predecessor of hoofed plant-eaters, and genetic analysis has identified hippos as whales' closest living relatives.
4. Recently unearthed fossils trace whales to a doglike predecessor of hoofed plant-eaters, and genetic analysis has identified hippos as whales' closest living relatives.
Recently unearthed fossils trace whales to a doglike predecessor of hoofed plant-eaters, and genetic analysis has identified hippos as whales' closest living relatives. 最近出土的化石使鲸的祖先可追溯到一种有蹄外形像狗的植食动物，而且基因分析证实了现存动物中河马是鲸的近亲。
