each other
US /iːtʃ ˈʌð.ər/
UK /iːtʃ ˈʌð.ər/

1.
satu sama lain, antara satu sama lain
used to show that each of two or more people or things does something to the other or others
:
•
They love each other very much.
Mereka sangat mencintai satu sama lain.
•
We help each other with our homework.
Kami membantu satu sama lain dengan kerja rumah kami.