in years1. in years上了年纪/上了岁数She is getting on in years. 她上岁数了。

2. in years几年内Poor planning deforested the area in several years. 因规划很差,这地区的树林几年内已被乱砍滥伐。 His money cascaded away in a couple of years. 他的钱在三两年内便滚滚流失了。

3. in years按照年龄The list is arranged in years. 这份名单是按年龄顺序排列的.in the year意思是：在这一年里；多年来