Definition
to persist in being amicable with someone, particularly due to the benefits they might offer
封養（與某人）；刻意維繫（與某人的關係）
He always keeps in with his boss to gain an advantage during promotions.
他總是與上司保持良好關係，以便在升職時獲得優勢。
If you want to succeed in this industry, you need to keep in with key individuals.
如果你想在這個行業成功，就需要與關鍵人物保持良好關係。
She tries to keep in with her colleagues to gain more support on the project.
她努力與同事保持良好關係，以獲得更多對該專案的支持。