repetition in English:

Repetition helps you remember something.

A mere repetition of other people's research cannot be called true scientific research.

You're wasting your time with all this needless repetition so spare us the long-winded explanation.

Avoid repetition by using different words.

This is the rhythmic movement of the eye from one object to another and is based on the repetition of elements in space and time.

We do not want a repetition of the American meltdown scenario in Europe. (Nie chcemy w Europie powtórki amerykańskiego scenariusza krachu gospodarczego.)

Writing over and over on the board is repetition.

Every successful repetition spoke favorably for the quality of the first test.