This horse is two years old.

这匹马两岁口。

I'm forty-two years old.

我四十二岁了。

Some of the data was up to two years old.

有些数据已经是两年前的了。

MY PARENTS SEPARATED when I was two years old.

在我两岁的时候，我父母分居了。

Arius, only two years old, drooled and gurgled.

年仅两岁的艾利乌又叫又哭。