This is the 10657th most frequent Polish word.
dorobiła
The Polish word "dorobiła" means "she/it earned extra" or "she/it added (something)" depending on the context.
In this sentence, 'dorobiła' is used to denote that Anna created or acquired additional keys, implying adding to an existing set.
Anna dorobiła klucze do mieszkania.
Anna made extra keys for the apartment.
Here, 'dorobiła' indicates that she earned additional money by doing some extra work.
Po pracy dorobiła trochę pieniędzy, pomagając sąsiadom.
After work, she earned some extra money by helping the neighbors.
In this context, 'dorobił się' (a reflexive form) means that the clock was supplemented with a new mechanism, implying an enhancement to its function.