Definition
to begin participating in an ongoing activity to gain an advantage.
中途加入參加（以獲取好處）
Their startup project is taking off quickly, so I decided to get in on it too.
他們的初創項目正在迅速起飛，所以我決定也加入其中。
When she heard about the potential profits of the project, she immediately wanted to get in on it.
當她聽說這個項目的潛在利潤時，她立即想要加入。
I hope to get in on this team because I’ve been impressed by everyone’s collaboration.
我希望加入這個團隊，因為我被大家的合作所打動。