导航: navigation; pathfinding; pilot; guide 短语和例子无线电导航 radio navigation; 天文导航 celestial navigation; 雷达导航 radar navigation; 给出港船舶导航 pilot the ships out; 由 ... 导航 under the pilotage of ..
空中导航: [航空] air [airborne] navigation; avigation; aeronavigation◇空中导航原理 navar principle
空中: in the sky; in the air; aerial; overhead; midair 短语和例子在空中翻筋斗 make a somersault in midair; 在大战期间伦敦受到来自空中的袭击。 during the great war london was attacked from the air. 首次在空中航行的飞行器是气球。 the first
