each other

US /iːtʃ ˈʌð.ər/
UK /iːtʃ ˈʌð.ər/
"each other" picture
1.

彼此, 互相

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.
他们非常爱彼此
We help each other with our homework.
我们互相帮助做作业。