adjective 下载 🔗分享 徒劳的，无效的，白费的。 Incapable of producing results; doomed not to be successful; not worth attempting. Examples : "It was futile to argue with him; his mind was already made up. " 和他争论是徒劳的，他已经打定主意了。 outcome attitude possibility 与AI对话词汇游戏阅读练习
