Avail

(n.)

(idm.) to little/no avial: (formal) with little or no success

没有什么效果；不成功

e.g. The doctors tried everything to keep him alive but to no avail.

医生千方百计想使他活下来，但无济于事。

e.g. Unfit to mend the azure sky, I passed some years on earth to no avail; My life in both worlds is recorded here; Whom can I ask to pass on this romantic tale?

无材可去补苍天，枉入红尘若许年。此系身前后事，倩谁记去作奇传。——曹雪芹《红楼梦》

(idm.) of little/no avail: (formal) of little or no use

没有什么用处；没有用

e.g. Your ability to argue is of little avail if the facts are wrong.

如果论据是错的，你的辩才也就没有什么用了。

(v.)

(formal or old-fashioned) to be helpful or useful to sb

有帮助；有益；有用

(phr. v.) avail yourself of sth: (formal) to make use of sth, especially an opportunity or offer

利用（尤指机会、提议等）

e.g. Guests are encouraged to avail themselves of the full range of hotel facilities.

旅馆鼓励旅客充分利用各种设施。

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