business administration background
long-standing epxerience
Noun
experience of office work
administrative experience
long-standing epxerience
Noun
to know it by experience
Verb
to have previous experience
Verb
to have enough experience for a position
Verb
to be an old hand at it
Verb
to know something inside out
Verb
to know something backwards
Verb
to polish something up
Verb
business training background
many years of experience
Noun
to take years of practice
Verb