Another way to prevent infections is to give patients antibiotics before surgery.

VOA: special.2010.04.21

If you see the pictures of Mike, especially here well before he had his surgery at the time he was about 30 skiing downhill.

如果看了迈克的照片，特别是这张他接受手术前的照片,就在他接受手术的时候，即他大约30岁左右时，他还在从事高山滑雪。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

That's one reason doctors want to know the risk of all groups of people before heading into surgery.

VOA: standard.2010.03.11

Her death,following surgery for a heart condition, came just weeks before Danny's 2008 "American Idol" audition.

VOA: standard.2010.07.29

In addition,the agency requires the makers of machinery used in LASIK to meet certain standards before the agency will approve any new lasers used in this surgery.

VOA: standard.2010.03.03