lu·cu·bra·tion /ˌlukjəˈbreʃən, ˌlukə-/
苦心的著作
Lu·cu·bra·tion n.
1. The act of lucubrating, or studying by candlelight; nocturnal study; meditation.
After long lucubration I have hit upon such an expedient. --Goldsmith.
2. That which is composed by night; that which is produced by meditation in retirement; hence (loosely) any literary composition.
Thy lucubrations have been perused by several of our friends. --Tatler.
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lucubration
n 1: a solemn literary work that is the product of laborious
cogitation
2: laborious cogitation