outdoor

a.户外的，露天的，野外的

out-of-phase, out-of-shape, out-patient, out-tray, outage, outback, outbid, outboard motor, outbreak, outbuilding, outburst, outcast, outcaste, outclass, outcome, outcrop, outcry, outdated, outdistance, outdo, outdoors, outer, outer space, outermost, outface, outfall, outfield, outfielder, outfight, outfit, outfitter, outflank, outflow, outfox, outgoing, outgoings, outgrow, outgrowth, outhouse, outing,