She has mastery of several languages.是什么意思？

She has mastery of several languages.

她精通数门语言。

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。

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

mastery

n. 精通，熟练，统治，控制，优势；

例句
He doesn't have mastery of the basic rules of grammar.
他还没有掌握基本的语法规则。

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。

several

adj. 几个的，专有的，各自的，分别的；pron. 几个，数个，一些；

例句
He's already altered several of the proposals in his economic plan to accommodate demands of special interests.
他已经改动了经济计划中的几项提议以迁就特殊利益集团的要求。

languages

n. 语言( language的名词复数 )，表达方式，（某民族、某国家的）语言文字，计算机语言；

例句
In African languages there is a close correspondence between sounds and letters.
非洲语言中的发音与字母关系密切。