to no effect

US /tə nō ɪˈfekt/
UK /tə nō ɪˈfekt/
"to no effect" picture
1.

没有效果, 徒劳

without producing the desired or intended result

:
They tried to persuade him, but to no effect.
他们试图说服他,但没有效果
All her efforts were to no effect.
她所有的努力都没有效果