you can't make a silk purse of a sow's ear
谚语
英文释义
谚语
- It is not possible to produce something refined, admirable, or valuable from something which is unrefined, unpleasant, or of little or no value.
词源
From make a silk purse of a sow's ear, with the common perception of swine as unrefined, dirty, or base creatures.
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数据来源: Wiktionary