avail
1. to no avail : 完全无用；
2. to little avail : 没什么用；
及物动词
1. avail的翻译
1. He availed himself of the opportunity to speak to her.
他利用这机会和她说话。
不及物动词
1. I'm afraid my help didn't avail you much.
恐怕我的帮助对你用处不大。
2. All his efforts avail to nothing.
他的一切努力都无济于事。
3. The medicine did not avail against the disease.
该药对此病无效。
名词
1. Speeches and protests were of no avail.
演讲和抗议全都徒劳。
1. 有助于：在肥沃的(fertile)土地上有一片丛林(jungle),树下的小河被大风(gale)吹成了冰河(glacier)他的本能(instinct)有助于(avail)他达到(attain)无敌的(invincible)地步.
2. 可用：1变流静机、电瓶、主变压整流器 (ESS TR)分别位于(B)A.没有使用(NOT IN USE)灯和可用(AVAIL)灯都亮;B.没有使用(NOT IN USE)灯灭而可用(AVAIL)灯亮;C.没有使用(NOT IN USE)灯和可用(AVAIL)灯都灭.
3. 有益于 <<我为友>>与我为友有益于你：plaza-市场<<破烂杂>>市场破烂杂乱 | avail-有益于 <<我为友>>与我为友有益于你 | pulse-脉冲<<炮似>>脉冲像打炮似的
4. 有益于：avail oneself of 利用 | avail 有益于 | availability 可用性
1. 毫无用处;没效果
If you do something to no avail or to little avail, what you do fails to achieve what you want.
e.g. His efforts were to no avail...
他徒劳无功。
e.g. I apologized repeatedly, but to little avail.
我一再道歉，但丝毫没有奏效。
2. 接受（提议）；利用（机会）
If you avail yourself of an offer or an opportunity, you accept the offer or make use of the opportunity.
avail的解释
e.g. Guests should feel at liberty to avail themselves of your facilities.
宾客们应该可以随意使用你们的各种设施。
1. 毫无用处;没效果
If you do something to no avail or to little avail, what you do fails to achieve what you want.
e.g. His efforts were to no avail...
他徒劳无功。
e.g. I apologized repeatedly, but to little avail.
我一再道歉，但丝毫没有奏效。
2. 接受（提议）；利用（机会）
If you avail yourself of an offer or an opportunity, you accept the offer or make use of the opportunity.
avail的解释
e.g. Guests should feel at liberty to avail themselves of your facilities.
宾客们应该可以随意使用你们的各种设施。