to cause someone or something to seem less important or less happy

Karen has always felt overshadowed by her famous elder sister. 凯伦总觉得自己与出名的姐姐相比光彩全无。

My happiness was overshadowed by the bad news. 这个坏消息给我的幸福蒙上了阴影。

(of a building) to be much taller than another building and therefore block the sun from it

Grand Central Station in New York is overshadowed by the PanAm building. 纽约中央火车站被泛美大厦遮住了阳光。