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。
他的努力是徒劳的。
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。
Guests should feel at liberty to avail themselves of your facilities.
客人们应可以随意使用你们的设施。
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。
She found him sleeping heavily, and all her efforts to awaken him were of no avail.
她发现他睡得很沉，她想唤醒他的一切努力都无济于事。
何济于事?
Now it's done, regrets are of no avail.; It's no use crying over spilt milk.
事已如此，后悔也是枉然。
我苦苦哀求，但无济于事。
Her powers of persuasion were to no avail.
她的说服力没有起到作用。
但这一切都无济于事。
The video tutor also has a couple of avail aments.
视频辅导也有一些缺陷。
His strength did not avail against the hostile onslaught.
他的力量阻挡不住敌方的冲击。
Weapons are of no avail without the people who use them.
只有武器而没有使用它们的人，武器是空的。
America has invited the Russians to join in, to no avail.
虽然美国已经邀请俄罗斯参加，但是被拒绝了。
I searched everywhere, including in the car, to no avail.
我到处都找遍了，连车里都找过了，但是什么也没找到。
Nicola: I've proposed to four different men without avail.
Nicola：我向四个不同的男人求过婚都没有成功。
Usually, they have tried all proven therapies, to no avail.
一般来说，他们已然尝试过所有经过验证的疗法，却徒劳无功。
Both of them have searched for jobs for months, to no avail.
对于工作，这对夫妇已经寻觅了数月之久，但是依然没有收获。
I would like to avail this opportunity to propose the following.
我愿借此机会，提出以下几点建议。
To avail these facilities from outside is often too expensive.
从“工寮”外面得到这些设施一般是极为昂贵的。
We try to help, giving our time and soul, but it's to no avail.
我们试图付出时间和灵魂来帮助，但一切都无济于事。
He also called the New York police and asked, to no avail, for help.
他也给纽约警署报警并且要去其帮助，完全无用。
I want to avail myself of this opportunity to make a bit explanation.
我想借这个机会略加解释。
And I'd like to avail myself of this opportunity to further explain it.
我想借这个机会略加解释。
Banking consolidation has long been talked about in the gulf-to little avail.
银行业的整合可能无济于事的问题已经在海湾地区讨论了很久。
Hood had been laboring to automate DNA sequencing for years, to no avail.
这些年来，Hood一直努力实现DNA测序自动化，但一直徒劳无功。
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