He has received extensive corrective surgery to his skull.是什么意思？

He has received extensive corrective surgery to his skull.

他的头骨做过大面积的矫形手术。

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

received

adj. 被一般承认的，被认为标准的；v. 收到( receive的过去式和过去分词 )，接到，接纳，接待；

例句
All this equipment has received international acclaim from the specialist hi-fi press.
这套设备受到全球高保真音响专业报刊的赞誉。

extensive

adj. 广阔的，广大的，范围广泛的，[物]广延的，[逻]外延的；

例句
...his extensive use of archival material.
他对档案资料的广泛应用

corrective

adj. 矫正的，惩治的；n. 矫正物，改善法，补救药；

例句
Scientific institutions have been reluctant to take corrective action...
科学机构一直不愿作出更正。

surgery

n. 外科学，外科手术，手术室，诊所，诊断时间；

例句
For many, the dentist's surgery remains a torture chamber.
对许多人来说，牙医的治疗室一直是间受刑室。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

skull

n. 颅骨，头盖骨，脑袋，脑子，[冶]渣壳，熔铁上的浮渣；

例句
The skull bones fuse between the ages of fifteen and twenty-five...
头骨在 15 至 25 岁之间长合。