service of a form of transportation / revolution, orbit

(for trains, aircraft, buses etc. to) to operate / to revolve

an electric multiple unit train

空回り: idling an engine; wasting effort

空回り: idle an engine; waste effort

回り: circumference, perimeter, edge; surroundings; rotation, circulation

回り: circumference, perimeter, edge / 回り: via, by way of that place / 回り: the round of something or someone / 回り: a span of twelve years / 回り: a unit of size in clothing

(rail transport) inner track of a loop line

Alternative spelling of 回り, etc.: surroundings; around; turning

to go around / Classifier for circuits or circles