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
堆: Ⅰ动词(堆积) pile up; heap up; stack 短语和例子把木柴堆在后院里 stack the firewood in the back yard; 大车上高高地堆满了水果和蔬菜。 the cart was piled high with fruit and vegetables. 谷仓里堆满了粮食。 the barn was heaped with gra