join in
US /dʒɔɪn ɪn/
UK /dʒɔɪn ɪn/

1.
turut serta, menyertai
participate or become involved in an activity with others
:
•
Everyone was singing, so I decided to join in.
Semua orang menyanyi, jadi saya memutuskan untuk turut serta.
•
Don't be shy, just join in the game!
Jangan malu, sertai sahaja permainan itu!