专心致志: devote oneself heart and soul to ...; be thoroughly engrossed in ...; be wedded to ...; do sth. with a will; be wholly given up to ...; concentrate one's energy on ...; devote oneself to s
全神贯注: give one's whole attention [mind] to ...; apply [bend] the mind to ...; be absorbed [engrossed] in ...; be preoccupied with; concentrate the whole energy upon ...; give one's mind wholly t