avail

• n. 效用，利益
• vt. 有益于，有益于；使对某人有利。
• vi. 有益于，有益于；使对某人有利。

前缀a-同ad-, 去，往. 词根val, 力量，词源同value, valiant. 指有益的，有力量的。

avail

avail: see value

avail (v.)

c. 1300, availen, apparently a French compound formed in English from Old French a- "to" (see ad-) + vailen "to avail," from vaill-, present stem of valoir "be worth," from Latin valere (see valiant). Related: Availed; availing. As a noun, from c. 1400.

1. His efforts were to no avail.

他徒劳无功。

来自柯林斯例句

2. I apologized repeatedly, but to little avail.

我一再道歉，但丝毫没有奏效。

来自柯林斯例句

3. We tried to keep him alive but to no avail.

我们全力抢救他,但却徒劳无功.

来自《简明英汉词典》

4. They tried artificial respiration but it was of no avail.

他们试做人工呼吸,可是无效.

来自《简明英汉词典》

5. They entreated and threatened, but all this seemed of no avail.

他们时而恳求,时而威胁, 但这一切看来都没有用.

来自《简明英汉词典》