The Chinese word "瞿然" is pronounced as "qú rán". In English pronunciation, it can be roughly approximated as "chyu rhan". The character "瞿" is pronounced like "chyu" with a soft "ch" sound as in "cheese" and a long "u" sound. The character "然" is pronounced like "rhan" with a rolled "r" sound and a short "a" sound followed by an "n" sound. Remember that this is just an approximation as English and Chinese sounds are quite different.