pitch in

US /pɪtʃ ɪn/
UK /pɪtʃ ɪn/
"pitch in" picture
1.

ikut membantu, berkontribusi, menyumbang

to join in and help with an activity or task, especially by contributing money or effort

:
Everyone pitched in to clean up the park after the festival.
Semua orang ikut membantu membersihkan taman setelah festival.
If we all pitch in, we can finish this project by tomorrow.
Jika kita semua ikut serta, kita bisa menyelesaikan proyek ini besok.