Definition: in a way that is not satisfactory Level: B2
遗憾的是，这种治疗方法并不对所有患者都有效。
___Sadly, the treatment doesn't work for all patients.
如果你认为她会让你那样做，那你就大错特错了。
If you think she'll let you do that, you're ___sadly mistaken.
几十年前流行的一些娱乐形式，遗憾地，已经消失了。
Some forms of entertainment which were popular decades ago have, ___sadly, disappeared.
