Their efforts were unavailing.
他們的努力都付諸東流。
牛津詞典
Efforts to reach the people named in the report proved unavailing...
聯系過報告中所提到的那些人，但都徒勞無功。
He died after a brave but unavailing fight against a terminal illness.
在與絕癥進行了一番勇敢但卻徒勞的抗爭之后，他還是去世了。
Disconsolate, Soapy ceased his unavailing racket.
索比怏怏不樂地停止了白費力氣的鬧嚷.
英漢文學 - 歐亨利
Operation was performed 17 days later after invalid anticoagulant treatments and unavailing catheter fragmentation.
經過檢查確定是大量肺栓塞,但是經過內科用肝素治療,卻發生血小板過低過低的副作用.
期刊摘選
His best efforts, however, proved unavailing and the child died.
然而, 他所有的努力都無濟于事,女兒還是死了.
期刊摘選
All our protests were unavailing.
我們的抗議全部無用.
《簡明英漢詞典》
Hurstwood heard the details of the weary and unavailing search that evening.
那天晚上,赫斯渥聽到了這次勞而無獲的尋找的詳細情況.
英漢文學 - 嘉莉妹妹
Their efforts were unavailing.
他們的努力都付諸東流。
《牛津高階英漢雙解詞典》
Efforts to reach the people named in the report proved unavailing.
聯系過報告中所提到的那些人，但都徒勞無功。
柯林斯例句
He died after a brave but unavailing fight against a terminal illness.
在與絕癥進行了一番勇敢但卻徒勞的抗爭之后，他還是去世了。
柯林斯例句
"a futile effort"
"the therapy was ineffectual"
"an otiose undertaking"
"an unavailing attempt"
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