in vain 徒劳
of no avail 无济于事
little effect 效果甚微
minimal result 结果最小化
pointless effort 徒劳的努力
1. His attempts to fix the broken engine were to little avail.
他试图修理那台坏掉的发动机，但收效甚微。
2. The new policy was implemented, but to little avail in reducing traffic congestion.
新政策实施了，但在缓解交通拥堵方面几乎无济于事。
3. She studied hard for the exam, yet her scores improved to little avail.
她为考试努力学习，但分数提高得很少，几乎没起作用。
4. The negotiations continued for months, but to little avail regarding the core issues.
谈判持续了数月，但在核心问题上几乎没有任何进展。
A: Did the new marketing strategy work out?
A：新的营销策略起作用了吗？
B: Honestly, it was to little avail. We barely saw any increase in sales.
B：说实话，收效甚微。我们几乎没看到销售额的增长。
1) 强调努力后的结果微不足道。
2) 暗示之前的尝试或措施未能产生显著影响。
3) 常用于正式报告或分析中，评估某种干预措施的有效性。
1. 几乎无济于事；收效甚微
e.g.Their efforts to improve the situation were to little avail.
他们改善局面的努力收效甚微。
e.g.It is to little avail to argue with him now.
现在和他争辩是无济于事的。
phrase
1. Producing little or no effect; failing to achieve the desired result.
Synonym: in vain, fruitlessly, without success