In detail, three distinctive features can be identified in BBC: the violation and reconstruction of turn-taking rules and adjacency pairs, topic decay and topical entangling, and the complexity and imbalance of discourse structure.

• 具体而言体现在三个方面,即话轮转换和相邻语对的破坏与重构,话题的频繁转换与交织,以及会话结构的复杂和不平衡性。