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