有unsuccessful:

adj. 不成功的；失败的

His application for Yale is unsuccessful again this time.

他这次申请耶鲁大学又失败了。
This unsuccessful feeling made all the players very sad.

这种失败的滋味让所有队员都很难过。

His efforts were unsuccessful.

他的努力没有成功。

Honestly, each strategy has cases of successful and unsuccessful campaigns.

老实说，每种策略都有成功和失败的活动案例。

He made an unsuccessful run for governor in 2005.

2005年他竞选州长失败。

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