Definition
to participate or engage in an activity with others
与他人共同参与或一起进行
We can go in on this new project together, so we can participate collectively.
我们可以一起参与这个新项目，这样我们就能共同参与。
To cut down expenses, we decided to go in on the costs for this trip.
为了减少开支，我们决定一起分担这次旅行的费用。
They plan to go in on buying that house so that everyone can be involved.
他们计划一起买那栋房子，这样每个人都能参与其中。