58 雲端裡跑馬 雲端裡跑馬 ─腳下空。 腳下空 指 不 能腳踏實地,輕浮 不 實在。 指不能腳踏實地 輕浮不實在 Riding a horse in the clouds ─ treading air. This describes one who does not have his feet on solid ground. 69