on air的用法和樣例：
例句
- After hearing the good news, Charles walked on air.
聽到這個好消息，查爾斯喜氣洋洋。 - After he heard the news he trod on air.
聽了這一消息后，他得意洋洋。 - Malcolm has been walking on air since he was offered that job he has been trying so hard for.
自馬爾科姆得到那份他一直非常想得到工作后，他一直洋洋得意。 - He waltzed me round so delicately I felt as if I was floating on air.
他非常輕快地帶著我跳華爾茲舞，我感到好像在空中飄蕩著。
