porterとは何ですか?A person employed to carry burdens, especially an attendant who carries travelers' baggage at a hotel or transportation station.A railroad employee who waits on passengers in a sleeping car or parlor car.A maintenance worker for a building or institution.Chiefly British One in charge of a gate or door.A dark beer resembling light stout, made from malt browned or charred by drying at a high temperature.