regretfully

adv. /rɪˈɡretfəli/ B1

遗憾地；懊悔地

In a way that shows sadness or sorrow.

仙境例句

The Lory looked regretfully at her wet feathers, which had been so bright and dry.

吸蜜鹦鹉惋惜地看着自己湿透的羽毛，那身羽毛原本又鲜亮又干爽。