vainly
🇺🇸
/ˈveɪnli/
🇬🇧
/ˈveɪnli/
adverb
R
in a way that does not achieve the desired result
He shouted after them, vainly trying to attract their attention.
彼は彼らに向かって叫び、彼らの注意を引きようと無駄に努力した。
translation
無駄に