forty是什么意思

num.
四十, 40
n.
四十岁

forty
cardinal number (pl. -ies)
the number equivalent to the product of four and ten; ten less than fifty; 40(Roman numeral: xl or XL)
四十;四十个(罗马数字： xl或 XL)
Troy was only forty miles away.
特洛伊仅四十英里远。
forty were arrested.
四十人被捕。