The manner in which the decision was announced was extremely regrettable.
宣布決定的方式非常令人遺憾。
The loss of jobs is highly regrettable.
失去工作非常令人遺憾。
It is regrettable that the police were not informed sooner.
遺憾的是沒有早些報警。
It is regrettable that strike leaders seem intent on spoiling holidays.
遺憾的是罷工領導人似乎決意要破壞節日的氣氛。
A person who does a regrettable action is often regretful afterwards.
行為不檢點的人，日后往往懊悔。