New words：

social ['səuʃəl]
adj.社会的；社会上的；社会地位的；社交的；群居的
n.联谊会；联欢会

Sample Sentences：

Bees and ants are social insects.
Women's social status has changed much over the years.
He made many useful social contacts while he was in Beijing.
He was invited to attend a barbecue social last Saturday afternoon.

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