to spend time when you are not working with friends or with other people in order to enjoy yourself

I tend not to socialize with my colleagues. 我不想与我的同事交往过多。

I hope Adam's actually doing some work at college - he seems to spend all his time socializing! 我希望亚当在大学里确实花了些工夫在学业上——他似乎把时间都用在了社交上面！

to train people or animals to behave in a way that others in the group think is suitable

Here at the school we make every effort to socialize these young offenders. 在这所学校里，我们努力使这些青少年罪犯适应社会生活。