once
The word 'einmal' is used in German to express the concept of 'once' in English. It can be used to indicate a single occurrence of an event, action, or process. For example, 'Ich habe es einmal gesehen' translates to 'I have seen it once' in English.
I go to the cinema once a week.
In this sentence, 'einmal' is used in the context of a frequency and translates as 'once'.
Once and never again.
Here, 'einmal' is used to describe a single occurrence of an event, emphasizing that it will not happen again.
He needs to check that once again.
In this case, 'einmal' is used in conjunction with 'again', indicating a repetition of an action.