miraculous
adjective uk/mɪˈræk.jə.ləs/ us/məˈræk.jə.ləs/
奇迹般的；令人惊奇的；不可思议的
very effective or surprising, or difficult to believe
The diet promised miraculous weight loss. 有人保证说按照这个食谱进餐就会有非凡的减肥效果。
Well, you've made a miraculous recovery since last night! 哇，才一晚上你就已经奇迹般地恢复了！