Language is [填空1]. We use language to exchange ideas with others in social interaction.
查看答案
Language is acquired by all people in much the[填空1]way.
The features that define our human languages can be called [填空1] features, making human languages so distinctive from languages used by other species.
There is an arbitrary relationship between the sound of a morpheme and its [填空1]
There is a certain[填空1] behind the creation of derivatives and compounds. They are not completely arbitrary.