forty-fifth num.第四十五forty-eightmo n.四十八开forty-eighth num.第四十八forty-eight num.四十八forty- adj.四十forty years of age 年登不惑forty winks 白天小睡；打盹forty two forty three forty thousand 四万forty six forty shades of blue forty seven forty one forty niner forty nine forty four forty five 45forty eight forty (adj., n.)