unsuccessfully
adv. 失败地；无用
例句
She tried unsuccessfully to twist free.
她试图挣脱身子，但无济于事。
《牛津词典》
She stood unsuccessfully as a candidate in the local elections.
她参加了地方选举，但未能当选。
He has been trying unsuccessfully to sell the business in one piece since early last year.
自去年年初起，他一直没法成功地把整个企业一起卖掉。
《柯林斯英汉双解大词典》
