diamond in the rough
US /ˈdaɪ.mənd ɪn ðə rʌf/
UK /ˈdaɪ.mənd ɪn ðə rʌf/
1.
璞玉, 未雕琢的钻石
a person or thing that has great potential but is not yet refined or polished
:
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The young artist was a true diamond in the rough, needing only guidance to shine.
这位年轻的艺术家是块真正的璞玉，只需指导就能大放异彩。
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The old house was a diamond in the rough, with good bones but in need of renovation.
那栋老房子是块璞玉，结构很好但需要翻新。