"历经千辛万苦" 这个短语源于中文，意思是经过了许多困难和痛苦。
在英文中，可以用以下短语来表达这个意思：
"After much hardship"
"After great difficulties"
"After overcoming many obstacles"
例句：
"After much hardship, he finally succeeded in his business venture." (经过了许多困难之后，他终于在商业上成功了。)
"After great difficulties, she finally graduated from college." (经过了许多困难之后，她终于从大学毕业了。)
"After overcoming many obstacles, he completed the marathon." (经过了许多障碍之后，他完成了马拉松比赛。)