get blood out of a stone
动词 v.
英文释义
动词 v.
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To do something difficult, frustrating, or pointless.
— Bradley looked at the fire, with a working face, and was silent for a while. At last he said, with what seemed an inconsistent composure of voice and feature: ‘You can’t get blood out of a stone, Riderhood.’
词形变化
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数据来源: Wiktionary