work without avail 枉费工夫
futility , uselessness
I persuaded him without avail.
我劝是劝过他了，但没有用。
youdao
Nicola: I've proposed to four different men without avail.
Nicola：我向四个不同的男人求过婚都没有成功。
She tried to argue herself out of the infatuation, but without avail.
她想说服自己摆脱迷恋，可是没成功。
The results show that many countries get excellent results without spending much money, whereas others such as Britain have splurged to no avail.
ECONOMIST: Academic excellence
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