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
公共: public; common; communal 短语和例子强化公共治安 increase public security; 他这样的犯法行为极大地危及公共安全。 such offences as his profoundly endanger public security.; 公共财产 public property; 公共财政 public finance; 公共餐室
