穷而后工 qióng ér hòu gōng 穷而后工......

穷理尽性 qióng lǐ jìn xìng 穷理尽性......

穷源竟委 qióng yuán jìng wěi 穷源......

穷源溯流 qióng yuán sù liú 穷源溯流......

穷源朔流 qióng yuán shuò liú 穷源......

穷日之力 qióng rì zhī lì 穷日之力的意......

穷当益坚 qióng dāng yì jiān 穷当益......

穷山僻壤 qióng shān pì rǎng 穷山僻......

穷困潦倒 qióng kùn liáo dǎo 穷困潦......

穷且益坚 qióng qiě yì jiān 穷且益坚......