| 单词 | hard-nailed | 
| 释义 | Definition of hard-nailed in English:hard-nailedadjective 
 OriginMid 19th century; earliest use found in John Clare (1793–1864), poet, farm labourer, and naturalist. Definition of hard-nailed in US English:hard-nailedadjective 
 OriginMid 19th century; earliest use found in John Clare (1793–1864), poet, farm labourer, and naturalist.  | 
	
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