1.a policy expressed as an eight-character slogan2.(esp.) the eight-character slogan for the economic policy proposed by Li Fuchun 李富春[lǐ fù chūn] in 1961: 調整、鞏固、充實、调整、巩固、充实、提高[tiáo zhěng gǒng gù chōng shí tí gāo] "adjust, consolidate, enrich and improve"
1.If you work at it hard enough, you can grind an iron bar into a needle.2.cf idiom 磨杵成针, to grind an iron bar down to a fine needle (idiom); fig. to persevere in a difficult task3.to study diligently