13岁英语是thirteen years old.
thirteen基本解释：
n. 十三；十三岁；十三个。
num. 十三。
adj. 十三的，十三个的。
thirteen 变化形式：
复数： thirteens。
易混淆的单词： Thirteen。
例句：
I was thirteen years old. I wore steel-rimmed glasses and I was a very solemn boy.
那年我十三岁了,戴着-副银边眼镜,是个不苟言笑的男孩。
I spent some parts of every year at the farm until I was twelve or thirteen years old.
在我十二、三岁前,每年都有一-段时间是在农场度过的。
He and I are both thirteen years old. but I am older than he, and I am fatter than he too.
他和我都是十三岁。但我比他年长一点,我也比他胖一点。