You can use mercifully to show that you are glad that something good has happened, or that something bad has not happened or has stopped.
例句
Mercifully, a friend came to the rescue...幸好一个朋友赶来解了围。Bolivia has been mercifully free of large-scale, drug-related violence.幸运的是,玻利维亚没有发生过与毒品有关的大规模暴力事件。
英汉词典释义
adv.
<主文>①令人感激地;幸而
The wait was mercifully brief, little more than an hour.幸好等待的时间很短,不过一个小时多一点。
仁慈地;宽大地;宽容地
It was a mercifully quick end for those condemned to die.对于那些死刑犯来说,这是一种仁慈的快速解脱。
英英词典释义
Adverb
1. in a manner that may be cruel but avoids suffering;
"we more mercifully had our bouncing betties go off at the head"