flying

n [U] going in an aircraft for travel or sport 乘坐飞行器（旅行或运动）: I'm terrified of flying I'd rather go by sea. 我害怕坐飞机--我宁愿坐船.

fluster, flute, flutist, flutter, fluvial, flux, fly, fly into a temper, fly-away, fly-blown, fly-by, fly-by-night, fly-fish, fly-fishing, fly-half, fly-paper, fly-past, fly-spray, flycatcher, flyer, flying buttress, flying colours, flying column, flying doctor, flying fish, flying fox, flying jump (also flying leap), flying officer, flying picket, flying squad, flying start, flying tackle, flying visit, flyleaf, flyover, flysheet, flyweight, flywheel, FM, FO,