noun · right in front of one's eyes; under one's nose

那支笔就在你眼底下，你怎么还没看见？

spread out in full view as a panorama

爬到顶峰，方圆几里的景色都在眼底下。

directional · at the present time; right now

眼底下最紧要的事是准备明天的考试。