He must have been pretty brainy to discover the Theory of Relativity and the equation E=mc2. In 1999, ‘Time’ magazine named Einstein as the Person of the Century. * must have been ~ = ~이었음에 틀림없다/ brainy = 아주 똑똑한/ Theory of Relativity = 상대성 이론 (전문보기)(받아쓰기)
