念念不忘

Tell me dear, are you longsome tonight?

早已前尘往事，在梦中却始终念念不忘。

Why do you agonize yourself with the thought of your failure?

你为何于你的失败念念不忘而自我折磨呢?

She had a mouth's mind to Dick Frontless and thought to run away with him.

她念念不忘克·龙特勒斯，并且想和他一起私奔。