great despite minor blemishes
... blemish (on plants) 锈斑; 锈斑 great despite minor blemishes 大醇小疵 perfect and without blemish 完美无缺; 完美无缺 ...
a rough diamond
... a rough count 约计; 约计 a rough diamond 大醇小疵 a surface of revolution (math) 旋转曲面; 旋转曲面 ...
大醇小疵,汉语成语,拼音是dà chún xiǎo cī,意思是大体纯正,而略有缺点。出自《读〈荀子〉》。