wist·ful·ly
adverb/ˈwɪstfəli/
/ˈwɪstfəli/
- in a slightly sad way that shows you are thinking about something that you would like to have, especially something in the past that you can no longer have
伤感的；（对已不可能发生之事）徒然神往的 - She sighed wistfully.
她伤感地叹息。 - ‘If only I had known you then,’ he said wistfully.
“要是我那时认识你就好了。” 他向往地说道。
- She sighed wistfully.