Definition
Occurring or happening directly in someone's sight; while someone is watching.
眼皮底下
The magician made the dove disappear before our very eyes.
魔術師在我們眼前讓鴿子消失了。
It was heartbreaking to watch him suffer and his power slip away before our very eyes.
眼睜睜看著他受苦，力量逐漸消逝，真是令人心碎。
The old building was demolished before our very eyes.
老建築在我們眼前被拆除了。