(noun.) (genetics) an organism that possesses a recessive gene whose effect is masked by a dominant allele; the associated trait is not apparent but can be passed on to offspring.
(noun.) a rack attached to a vehicle; for carrying luggage or skis or the like.
(noun.) a self-propelled wheeled vehicle designed specifically to carry something; 'refrigerated carriers have revolutionized the grocery business'.
(noun.) a person or firm in the business of transporting people or goods or messages.
(noun.) (medicine) a person (or animal) who has some pathogen to which he is immune but who can pass it on to others.
(noun.) a boy who delivers newspapers.
(noun.) someone whose employment involves carrying something; 'the bonds were transmitted by carrier'.
(noun.) an inactive substance that is a vehicle for a radioactive tracer of the same substance and that assists in its recovery after some chemical reaction.
杰德手打
校对:弗恩