虽然点头很重要，但是它们仅仅是人类社交互动中的一小部分。

Although nods are important, they are but a small part of human social interaction.

youdao

这是一种正常的社交互动。

This is a normal social interaction.

youdao

研究社会群体交互动力的社会心理学分支。

Study on Social Network and Community Support for the Old in Taijiquan Group;

youdao

研究社会群体交互动力的社会心理学分支。

Study on Social Network and Community Support for the Old in Taijiquan Group;

youdao