lost labour

英 美
  • n. 徒劳
    用作名词 (n.)
    1. It is lost labour to sow where there is no soil.
      没有土壤,播种也是徒劳。
    2. He had tried vainly and lost his heart at last.
      他徒劳地尝试,终于失去了信心。

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