on the side [ɔn ðə said]

以下由轻松背单词网站提供

作为兼职，作为副业；私下

He's a teacher but he does some journalism on the side.他是教师，可还兼职做一些新闻工作。
He is a mechanic who buys and sells cars on the side.他是一个兼营买卖汽车的技工。