十几年来的英文

几十年 several decades 十几年 more than ten years 十年 ten years

for the last more than ten years最近十多年来 for the past more than ten years过去的十多年

用during

Over the past three decades,........三十年来.....For thousands of years,.......几年前年来.....

in the past few 数词 years，或者是during the past 数词 years

in the past ten years