unsuccessful

中文意思

• adj. 不成功的，失败的

英文释义

• adj. not successful; having failed or having an unfavorable outcome

例句

1. adj. 不成功的，失败的

   After several unsuccessful attempts to fix the machine, we decided to call a professional technician.

   在几次修理机器的尝试失败后，我们决定联系一位专业技术人员。