주업【主業】
основное занятие (дело)
主業에 종사하다 работать по своей профессии
"Experience is simply the name we give our mistakes." Oscar Wilde
"A penny saved is a penny earned." Benjamin Franklin
"The mystery of government is not how Washington works but how to make it stop." P. J. O'Rourke
"Never retreat. Never explain. Get it done and let them howl." Benjamin Jowett