infra-red

a.红外线的

infliction, inflorescence, inflow, influence, influence on, influential, influenza, influx, inform, informal, informality, informally, informant, information, informative, informed, informer, infra, infra dig, infra-, infraction, infrared, infrastructure, infrequency, infrequent, infrequently, infringe, infringement, infuriate, infuriating, infuriatingly, infuse, infusion, ingenious, ingeniously, ingenue, ingenuity, ingenuous, ingenuously, ingenuousness,