英语翻译

题目

英语翻译
和年龄有关的。
我现在把句子写下来，你们看看，
Though the peak in most fields comes early---most Nobel Prize winners did their top research in their late 20's and 30's ---creative people continue to produce quality work throughout their lives.
their late 20's and 30's怎么翻译？

答案

在20岁末