更多bonobo例句

1. That ancestor, who lived roughly 7 million years ago, had hands designed much like those of tree-adept, knuckle-walking chimps and bonobos, he and his colleagues say.
2. It may be because chimpanzees have natural predators and bonobos, for geographical reasons, don’t.
3. That was especially true of higher-ranking bonobos in the community, suggesting some awareness of having broken a joint commitment and wanting to signal friendly intent when rejoining lower-ranking grooming partners, the scientists say.
4. Still, it’s likely that bonobos think in less complex ways than people do about mutual commitments, Heesen and colleagues say.
5. In previous studies, even 3-year-old children were much less willing to interrupt joint tasks for rewards than bonobos were in the new experiments.