Something that is memorable is worth remembering or likely to be remembered, because it is special or very enjoyable.
例句
...the perfect setting for a nostalgic memorable day...度过令人难忘的怀旧一日的绝佳环境Annette's performance as Eliza Doolittle in 'Pygmalion' was truly memorable.安妮特在《卖花女》中扮演的伊丽莎·杜利特尔这个角色实在令人难忘。