Menstruation may cease when a woman is anywhere between forty-five and fifty years of age.

月经可能在女性45至50岁之间停止。

《柯林斯英汉双解大词典》

By then he was more than fifty years of age.

到那时，他已经五十多岁了。

youdao

In fact he did not accept high office until he was over fifty years of age.

实际上直到五十多岁时他才做了高官，这年龄在那个时候是相当老了。

youdao

And,we will have some good news for people fifty years of age and up.

VOA: special.2010.08.03

All of the women were fifty years of age or older.

VOA: special.2009.04.15

We are currently between thirty and fifty years of age, and there are 84 million of us in the United States.

FORBES: The Challenges Facing Gen X Women

In 1977, Brace published an article that put the age of the Western overbite at no more than two hundred and fifty years which is to say that flatware and, with it, a significant change in how we chewed were all it took for the edge-to-edge occlusion that we inherited from the Neanderthals to be replaced by the bite we now call normal.

NEWYORKER: A Fork of One��s Own