So where exactly is the gulf between humans and other animals and how did we develop sophisticated language?

He may not have had sophisticated language, but he and his companions were a co-operative group.

Other people have the same biases but put it in more sophisticated language.

He was talking in a highly sophisticated language, with more than a dozen pronoun and verb numbers.

As the pupils continue through the tasks a wider range of source materials could be added which also included more sophisticated language.

He threw revealing light on the unending plight of the middle class in his highly sophisticated language.

When two or more children in a family are deaf, however, more sophisticated language develops.

Man's need for communication fostered the development of increasingly sophisticated language.

A sophisticated academic language for talking about the sociology of roles did not exist in the mid-19th century.

In these works we see an already sophisticated technical language well equipped with its own terminology.