比较级： more sadly
最高级： most sadly

Sadly , progress on both pledges is weak .

不幸的是，这两个承诺都进展不力。

Sadly , we have never really recovered from the recession .

真可惜，我们从未真正摆脱衰退实现复苏。

His wife sadly agreed that the marriage seemed broken .

妻子伤心地承认了他们婚姻似乎已经破裂这一事实。

Sadly , the results page doesn 't automatically update as new updates come in .

悲哀地是，搜索结果页并没有随着跟进的更新信息自动更新。

Completely true , and sadly irrelevant .

完全正确，但是不幸的是这毫不相关。