Regretably
adv. 令人遗憾, 使人悔恨, 可抱歉, 不幸, 可叹, 可惜
🗣️ 情景例句
You live like a pig!
你简直是住在猪窝里！
Sadness and gladness succeed each other.
悲喜互继，哀乐相续。
For our purposes, we are concerned only with one kind of cost----
就我们的目的而言，我们只关心一种费用-