sadly, mournfully, sorrowfully
Он скорбно покачал головой.
He sadly shook his head.
Скорбно, да истинно.
It's sad, but true.
Старик скорбно смотрел на пустой дом.
The old man looked sadly at the empty house.
Она скорбно покачала головой в ответ.
She shook her head sadly in response.
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