adj.不成功的；失败的
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。
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