be unsuccessful
US /bi ʌnˈsʌk.səs.fəl/
UK /bi ʌnˈsʌk.səs.fəl/
短語
不成功, 失敗
to fail to achieve a desired outcome or goal
範例:
•
Despite their best efforts, they continued to be unsuccessful in their attempts to climb the mountain.
儘管他們盡了最大努力，但他們仍然未能成功攀登這座山。
•
If you are unsuccessful in your first attempt, don't give up.
如果你第一次嘗試不成功，不要放棄。