什么是 messenger?One that carries messages or performs errands, as:A person employed to carry telegrams, letters, or parcels.A military or official courier.An envoy to another person, party, or government.A bearer of news.A forerunner; a harbinger: the crocus and other messengers of spring. A prophet: the messenger of Allah. Nautical A chain or rope used for hauling in a cable. Also called messenger line.To send by messenger.