lucubratio, onis. f.
夜工。仔細。— vespertina 夜工。— antelucana 淸早工。 Per lucubrationem ferramenta acuere 夜磨利器具。
Joaquim Affonso Gonçalves, Lexicon Magnum Latino-Sinicum, 3rd edition (Peking: Typis Congregationis Missionis, 1936 [1st ed. Macau, 1841]). Digitized at Dickinson College, 2023.