她祖籍是德国。用英语怎么说？

她祖籍是德国。

She is of German descent.

she

pron. 她，它；

例句
Her lover walked out on her after she had aborted their child.
她的情人在她打掉胎儿后甩了她。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

German

adj. 德国的，德国人/语的，德国文化的；n. 德国人，德语；

例句
He didn't want to go against the wishes of the German government...
他不想违抗德国政府的意愿。

descent

n. 下降，血统，倾斜；

例句
Sixteen of the youngsters set off for help, but during the descent three collapsed in the cold and rain.
16 名年轻人出发去寻求帮助，但在下山过程中有 3 人因寒冷和大雨晕倒了。