| 释义 | 
		unavailingun‧a‧vail‧ing /ˌʌnəˈveɪlɪŋ◂/ adjective literary    - A law protecting the nesting birds was passed in 1621 which, to judge from its results, was unavailing.
 - And at least you will not have worn yourself out with unavailing efforts.
 - Attempts to reach him by telephone were likewise unavailing.
 - Purely national solutions to problems of corporate control are likely, therefore, to be unavailing.
 
    not successful or effective  SYN  unsuccessful:   unavailing efforts to make her happy  |