Many recollections of that evening have perished, but one thing that lingers in my mind is that song we danced to.

### 解释 lingers 是动词 linger 的第三人称单数现在时形式。linger 的意思是"徘徊、逗留"，引申为"（记忆、感觉等）久久不散、萦绕心头"。在句中表示"（那首歌的记忆）持续留在脑海中"。