tā / fā / shì / yào / wán / chéng / fù / qīn / de / yí / yuàn / ràng / fù / qīn / zài / quán / xià / ān / xīn

他发誓要完成父亲的遗愿，让父亲在泉下安心。

He vowed to fulfill his father's last wish so that his father can rest in peace beneath the earth.