40一50的英文怎么寫

　　例句：

　　Fifty is the new forty。

　　四十尚未老，五十正當年。

　　You can't live on forty pounds a week。

　　你靠每周四十英鎊沒法過活。

　　He told us that her age was forty—eight or thereabouts。

　　他告訴我們她的年齡在四十八歲左右。

　　They would have been married forty years come this June。

　　到今年六月他們結婚就有四十年了。