1.
All his efforts avail him nothing.
他的一切努力对他都无用。(他徒劳无功。)
2.
They endeavored to make her happy but in vain.
他们尽量使她快乐，却徒劳无功。
3.
They endeavoured to make her happy but in vain.
他们尽量使她快乐, 却徒劳无功.
4.
We tried to keep him alive but to no avail.
我们全力抢救他, 但却徒劳无功。
5.
It is aimless to cast water into the sea.
投杯水于大海，徒劳无功。
6.
I digged for gold in vain.
我掘地寻金但徒劳无功。
7.
The wind cannot be caught in net.
撒网捕风,徒劳无功。
8.
The doctor tried everything to keep him alive but to no avail.
医生们曾竭尽全力抢救他的生命，但却徒劳无功。
9.
The doctors tried everything to keep him alive but to no avail.
医生们曾竭尽全力抢救他的生命, 但却徒劳无功.
10.
His efforts to woo her to his side proved fruitless.
他试图说服她站到自己一边的努力徒劳无功。
11.
The violence and dishonesty of the election made a mockery of his claim to be restoring democracy.
选举暴力和不实使他声称恢复民主的主张徒劳无功。
12.
Revising the procedure was an entirely profitless exercise.
对程序进行修改是徒劳无功的.
13.
To be overcome by a sense of futility or defeat.
断念被徒劳无功或失败打倒了
14.
You become a spiritual tourist,bustling about and never getting anywhere.
你便成了求道的观光客，忙得徒劳无功。
15.
And so it is an exercise in futility .
因此，那一切根本是徒劳无功之举。
16.
All our efforts were mockeries.
我们的一切努力都徒劳无功。
17.
SOD. Without clear objectives, chances are that a meeting will be unproductive.
没有明确目标的会议多半是徒劳无功。
18.
All attempts to revive the fishing industry were foredoomed to failure.
千方百计振兴渔业注定徒劳无功.