unsuccessful

US /ˌʌn.səkˈses.fəl/
UK /ˌʌn.səkˈses.fəl/
"unsuccessful" picture
1.

不成功的, 失败的

not achieving the desired aim or result

:
Their attempts to reach an agreement were unsuccessful.
他们达成协议的尝试不成功
The rescue mission was largely unsuccessful due to bad weather.
由于恶劣天气,救援任务大体上不成功