他在五十多岁时退休了。

He retired in his fifties.

《牛津词典》

我祖父五十多岁时展露出对京剧的兴趣。

My grandfather showed an interest in Beijing opera in his fifties.

youdao

当他五十多岁时，他开始学习英语。

He began studying English when he was in his fifties.

youdao

Now, Ludwig van Beethoven was in his fifties when he was working on his last symphony-- what would prove to be his last symphony-- his Ninth Symphony, and he'd been tinkering with this particular melody all the way back to probably 1803, so it's about twenty years or so.

路德维希·凡·贝多芬在五十多岁时,创作了他最后一首交响乐,后来成为他最后的交响曲,就是他的第九交响曲,他一直在锤炼这段旋律,也许要追溯到一八零三年,所以大概经历了二十个年头

耶鲁公开课 - 聆听音乐课程节选