Complex sentence: However, the development of the turbojet meant it had a short service history, but when the B 17 ended Swedish service in 1947--50,46 were sold to Ethiopia, remaining in service until 1968.
Split into simpler sentences: However, the development of the turbojet meant it had a short service history. When the B17 ended service in 1947--50 46 were sold to Ethiopia, remaining in service until 1968.