Definition
to participate or engage in an activity with others
與他人共同參與或一起進行
We can go in on this new project together, so we can participate collectively.
我們可以一起參與這個新項目，這樣我們就能共同參與。
To cut down expenses, we decided to go in on the costs for this trip.
為了減少開支，我們決定一起分擔這次旅行的費用。
They plan to go in on buying that house so that everyone can be involved.
他們計劃一起買那棟房子，這樣每個人都能參與其中。