a piece of work embodying one's utmost effort; one's bitter toil spent in writing [painting]; expert craftsmanship is the result of long practice and hard work
Related Translations:
苦心: trouble taken; pains 短语和例子一片苦心 with great pains; 苦心钻研 serious study and investigation; 她煞费苦心教育她的子女。 she took great pains in educating her children
