| 单词 | of no avail |
| 释义 | of no avail useless； unsuccessful； in vain没有用 *His sickness was treated with many medicines，but all were of no avail．他的病已用各种药治过，但都无效。 *Tom's practicing was of no avail．He was sick on the day of the game．汤姆平时的练习全部泡汤了，比赛那天他病了。 *Although they tried hard， their efforts seemed to be of no avail．虽说他们花了很大力气，但看来还是徒劳无功。 |
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