This is to certify that the applicant li Jia is the son of li Yi (related person), li Yi (related person) is the father of li Jia (applicant).

兹证明申请人李甲是关系人李乙的儿子，关系人李乙是申请人李甲的父亲。

youdao

I certify that I am physically fit and fully understand that I am joining this event at my own risk and shall be liable for any loss of property or injury to my person.

本人的健康及体能良好，明白及自愿参加是次赛事，并愿意自行承担财务损失和伤亡之责任。

youdao

Medicare requires that a physician certify that a person is likely to die within six months before she can be enrolled.

FORBES: Learning the Right Lessons from Hospice