病毒营销

viral marketing

illness / CL:場|场[chang2] / disease / to fall ill / defect

virus

poison / to poison / poisonous / malicious / cruel / fierce / narcotics

camp / barracks / battalion / to build / to operate / to manage / to strive for

marketing

to melt (metal) / to cancel or annul / to sell / to spend / to fasten with a bolt / bolt or pin