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单词 unsuccessful
例句
unsuccessfulunsuccessful /ˌʌnsəkˈsesfəl/ adjective unsuccessful
not succeeding in doing something. You use unsuccessful especially about attempts to do something which have failed:
  • The prisoners made an unsuccessful attempt to escape from the jail.
  • We tried to find out where the noise was coming from, but were unsuccessful.
  • ineffective
    something that is ineffective does not do what you want. You use ineffective about drugs and methods that do not work:
  • The medicine proved to be ineffective against the disease.
  • useless
    not helpful or useful at all. Useless sounds much stronger and more informal than ineffective:
  • The instructions they gave me were useless. I couldn't understand them at all.
  • It is useless telling him he is wrong. He never listens to anyone.
  • ANTONYMS ➔ see successfulADVERBS: unsuccessfulYou can make the adjectives that mean unsuccessful into adverbs by using an -ly ending: We tried unsuccessfully to find out where the noise was coming from. | My broken arm hung uselessly at my side.
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    更新时间:2025/7/3 10:22:51