haunting melody
haunting memory
hauntingly beautiful
haunting presence
A: Why are you so quiet?
A：你为什么这么安静？
B: I am still thinking about that haunting melody.
B：我还在回味那段令人难忘的旋律。
1) 令人难忘的，凄美的
2) 幽灵出没的
3) 萦绕心头的
1. 令人难忘的，凄美的
2. 幽灵出没的
adj.
1. Extremely beautiful, sad, or frightening in a way that is difficult to forget.
Synonym: unforgettable, poignant