在几次失败的尝试之后，团队终于成功了。

After several ___unsuccessful attempts, the team finally succeeded.

不幸的是，她的工作申请没有成功。

Unfortunately, her job application was ___unsuccessful.

尽管付出了努力，寻找失踪狗狗的行动还是没有成功。

Despite their efforts, the search for the missing dog was ___unsuccessful.