unavailing
US /ˌʌn.əˈveɪ.lɪŋ/
UK /ˌʌn.əˈveɪ.lɪŋ/
1.
徒劳的, 无效的, 无益的
achieving little or nothing; ineffective
:
•
All their efforts to save the drowning man proved unavailing.
他们为营救溺水者所做的一切努力都徒劳无功。
•
Her pleas for mercy were unavailing.
她求饶的请求毫无作用。