adjective🔗Share徒劳的，无效的 Fruitless, futile, useless."Her efforts to convince her parents to let her go to the party were unavailing; they remained firm in their decision. "她试图说服父母让她去参加派对的努力都是徒劳的，他们仍然坚持他们的决定。outcomeachievementactionChat with AIVocabulary GamePractice Reading
