传递

传递	chuán dì	to transmit; to pass on to sb else / (math.) transitive
传	chuán	to pass on / to spread / to transmit / to infect / to transfer / to circulate / to conduct (electricity)
传	zhuàn	biography / historical narrative / commentaries / relay station
递	dì	to hand over; to pass on; to deliver / (bound form) progressively; in the proper order