他已70岁了.用英语怎么说？

他已70岁了.

He has seen seventy winters.

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

例句
...the operation a patient has had.
病人做过的手术

seen

v. 看见( see的过去分词 )，观看，领会，考虑；

例句
Holiday spots have seen a dramatic revival and tourist chiefs are competing for a slice of the action.
各个度假点重又呈现出一派兴旺景象，旅游业的龙头老大们都在争着分一杯羹。

seventy

n. 七十，从七十到七十九的数目、年数或温度；

例句
The country has been battered by winds of between fifty and seventy miles an hour.
该国遭受到时速高达50至70英里的大风袭击，破坏严重。

winters

n. 冬，冬天，冬季( winter的名词复数 )；

例句
The plant will stand all but the worst winters out of doors.
除了最严寒的冬季，这种植物都能在户外生长。