unforgettable的翻译是难忘的，难以忘怀的。
读音：
英读音[ˌʌnfəˈɡetəbl]；美读音[ˌʌnfərˈɡetəbl]。
词型变化：
副词：unforgettably，名词：unforgettability 。
牛津词典：
adj.
难以忘怀的；令人难忘的。
if sth is unforgettable , you cannot forget it, usually because it is so beautiful, interesting, enjoyable, etc.
同义词： memorable，compare forgettable.
双语例句：
1.A visit to the Museum is an unforgettable experience.
参观博物馆是一段令人难忘的经历。
2.A bright shooting star,or meteor,is an unforgettable sight.
明亮的流星，或者说陨石，是番难忘的景象。
3.Every person stood to applaud his unforgettable act of courage.
所有人起立为他不可磨灭的英勇之举鼓掌。
4.My first love was unforgettable.
我的初恋难以忘怀。
5.A visit to Rome will be unforgettable.
到罗马一游将会令人永远难忘。
6.He created many unforgettable characters in his novels.
他在他的小说中创造了很多令人难忘的人物。
7.He spent so many unforgettable days with them that he was loath to part with them.
他与他们一起度过那么多难忘的日子，他舍不得离开他们。
8.Love made these things unforgettable.
爱使得这些事难以忘怀。
9.In the end,that Thanksgiving became an unforgettable experience.
最后，感恩节成了一次难忘的经历。
10.In all,taking the bus in Latin America is really fun and unforgettable.
总而言之，在拉丁美洲乘公共汽车真的很有趣，也很难忘。