双语例句
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She closed her eyes tightly in a vain attempt to hold back the tears.
她紧闭双眼，却无法忍住眼泪。
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The drafting committee worked through the night in a vain attempt to finish on schedule.
起草委员会徒劳地通宵工作想按期完成工作。
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She made a vain attempt to stop him.
她试图阻止他，但是徒然。
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He made a vain attempt to reach the drowning child.
他试图接近那个快淹死的小孩，但没有成功。