Definition
to have a good relationship with someone, often resulting in personal advantages due to their liking of you.
与…关系良好，得到喜欢并获得好处
She's well in with the manager, so she always gets preferential treatment.
她与经理关系很好，所以总是能得到优待。
He's well in with the committee members, which is very helpful for his proposal.
他与委员会成员关系很好，这对他的提案非常有帮助。
To get promoted in the company, he needs to get well in with the higher-ups.
为了在公司获得晋升，他需要与高层建立良好的关系。