a solemn literary work that is the product of laborious cogitation
laborious cogitation
lucubration详细解释
lu.cu.bra.tion n.(名词)Laborious study or meditation.刻苦的学习:勤奋的学习或思考Often lucubrations Writing produced by laborious effort or study, especially pedantic or pretentious writing. 常作 lucubrations 著书立说,刻苦研究:勤奋的努力或学习产生的著作,尤其是迂腐的或做作的著作