unnoticed

未被注意的、被忽略的、沒人發現的

Her hard work went unnoticed for years by the management.

她多年來的努力一直沒有被管理層注意到。

不受重視的、默默無聞的

The small bookstore remained unnoticed until a food blogger wrote about it.

這家小書店一直默默無聞，直到一位美食部落客寫了它。

悄悄地、不被察覺地

He slipped out of the meeting unnoticed halfway through.

他在會議進行到一半時悄悄離席，沒人發現。