surgery例句

He has received extensive corrective surgery to his skull.
他的头骨做过大面积的矫形手术。

This type of surgery could even be used to extract cancerous growths.
这种外科手术甚至可以用来切除癌性肿瘤。

He needed surgery to cure a troublesome back injury.
他需要做手术来治好烦人的背伤。

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