unavailing

Their efforts were unavailing.

他们的努力都付诸东流。

牛津词典

Efforts to reach the people named in the report proved unavailing...

联系过报告中所提到的那些人，但都徒劳无功。

He died after a brave but unavailing fight against a terminal illness.

在与绝症进行了一番勇敢但却徒劳的抗争之后，他还是去世了。

Disconsolate, Soapy ceased his unavailing racket.

索比怏怏不乐地停止了白费力气的闹嚷.

英汉文学 - 欧亨利

Operation was performed 17 days later after invalid anticoagulant treatments and unavailing catheter fragmentation.

经过检查确定是大量肺栓塞,但是经过内科用肝素治疗,却发生血小板过低过低的副作用.

期刊摘选

His best efforts, however, proved unavailing and the child died.

然而, 他所有的努力都无济于事,女儿还是死了.

期刊摘选

All our protests were unavailing.

我们的抗议全部无用.

《简明英汉词典》

Hurstwood heard the details of the weary and unavailing search that evening.

那天晚上,赫斯渥听到了这次劳而无获的寻找的详细情况.

英汉文学 - 嘉莉妹妹

Their efforts were unavailing.

他们的努力都付诸东流。

《牛津高阶英汉双解词典》

Efforts to reach the people named in the report proved unavailing.

联系过报告中所提到的那些人，但都徒劳无功。

柯林斯例句

He died after a brave but unavailing fight against a terminal illness.

在与绝症进行了一番勇敢但却徒劳的抗争之后，他还是去世了。

柯林斯例句