手术前的12个小时内不能吃东西也不能喝水。

You may be instructed not to eat or drink anything 12 hours before the procedure.

youdao

重物帮助减少手术前的眼球压力，可以让手术过程更保险。

The weights help reduce pressure within the eyeballs before surgery, which makes the procedure easier.

youdao

你可能被要求在手术前的一天或几天里仅仅可以喝清洁的液体代替饮食。

You may be requested to drink clear liquids, only, for one or several days prior to the operation.

youdao

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