不幸的是这本书

unfortunately───adv.不幸地

infortunately───事故

fortunately───adv.幸运地

informative book───资料性书籍

unfortunate───adj.不幸的；令人遗憾的；不成功的

unfortunateness───不幸

unfortunates───adj.不幸的；令人遗憾的；不成功的

important book───重要书籍

importunately───adv.缠扰不休地

Unfortunately, Scenarios, Stories, Use Cases just isn't that book.───可惜，《场景、案例、用例》恰恰不是这样的书。

Unfortunately, the implications of Bradshaw's extraordinary opening premise are not fully explored in her book.───很可惜，在她的书中，布拉德肖出色的基本假设在书中没有得到充分探讨。

Age of the Unthinkable" is a thought-provoking book. Unfortunately, one of the thoughts that it provokes is that its central argument is wrong.───超乎想像的时代》一书发人深省，不过可惜的是，本书的启发之一，就是本书的主要论述有误。