orang-utan

例句：

1. 1.Orang-utans are the largest primates in the world.
   猩猩是世界上体型最大的灵长类动物。
2. 2.The orang-utan is known for its unique facial features and intelligence.
   猩猩以其独特的面部特征和智力而闻名。
3. 3.In the wild, orang-utans live in groups of up to 50 individuals.
   在野外，猩猩以多达50只的群体生活。