- to interact ảnh hưởng lẫn nhau, tác động qua lại
- aufeinander abstimmen to coordinate; to harmonize
- aufeinander abgestimmt sein to be in tune with one another
- etwas aufeinander abstimmen to coordinate something

The following video provides you with the correct English pronunciation of the word "aufeinander einwirken", to help you become a better English speaker.