unsuccessful
adj. 不成功的；失败的
副词：unsuccessfully 名词：unsuccessfulness
近义词：abortive，fruitless，unfortunate，failing，vain，futile，ineffectual，ineffective，failed，unproductive，disastrous，stillborn，successful，
英英释义
Adjective
- not successful; having failed or having an unfavorable outcome
- failing to accomplish an intended result;
"an abortive revolt" "a stillborn plot to assassinate the President"
例句
用作形容词(adj.)
- My early attempts at learning to drive were unsuccessful.我曾经几次打算学开车，却都没有学成。
- He was discouraged by the unsuccessful attempt.这次不成功的尝试使他气馁。
- The unsuccessful candidate demanded a re-count.那个落选的候选人要求重新计算选票。
- After a series of unsuccessful attempts, he has finally passed the driving test.经过连续几次的失败，他最后终于通过了驾驶考试。