apertum, i. n.
明處。平地。Est in aperto 明然。容易。 Castris in aperto positis 於平地插營。
Joaquim Affonso Gonçalves, Lexicon Magnum Latino-Sinicum, 3rd edition (Peking: Typis Congregationis Missionis, 1936 [1st ed. Macau, 1841]). Digitized at Dickinson College, 2023.