social intercourse；social contact；sociality社交

There was social intercourse between the old and the young. 老年人与年轻人之间有社会交往。

In social contact, everyone desires others to see him at his best rather than at his worst. 在社交中，人人都想要别人看到自己最好的一面而不是最糟糕的一面。

It can also put students 'initiative into full play and cultivate their skills of sociality. 它提高了学生的学习兴趣、增强了学习动机、提升了自信心、发挥了主动性、培养了社交技能。