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
训练: train; drill; manage; practice; breeding 短语和例子训练部队 train troops; 实战训练 exercises under battle conditions; 适应性训练 acclimatization training; 专业训练 professional training
