1.Therefore, proper greeting behavior is crucial for the foundation and maintenance of interpersonal relationships.
2.As an everyday practice that is routinized and happens at very low levels of awareness in interactions, greeting is seemingly a spontaneous reaction to the encountering of people.
3.It is the ritual behavior that the whole world shared to greet our friends or colleagues when we meet them.
说是句子的意思表达不清楚，或是太罗嗦，希望可以帮忙完善，谢谢
