He has been engaged in foreign trade for twenty years. - O yirmi yıldır dış ticaretle uğraşıyor.
He has been engaged in foreign trade for twenty years.
O yirmi yıldır dış ticaretle uğraşıyor.
My father is engaged in foreign trade. - Babam dış ticaretle uğraşır.
My father is engaged in foreign trade.
Babam dış ticaretle uğraşır.