短语词组短语march fruitlessly 无效地进行Work fruitlessly 劳而无功search fruitlessly 无结果地搜索hope fruitlessly 无望try fruitlessly 无结果地尝试object fruitlessly 毫无结果地反对waste fruitlessly 徒劳地浪费attempt fruitlessly 无结果地尝试long fruitlessly 没有结果地渴望 返回 fruitlessly