youdao

Willem’s first operation lasted four hours.

威廉的第一次手术用了四个小时。

youdao

We solved a lot of the problems in the first operation.

在第一次手术中，我们就解决了大量的问题。

youdao

Mister Branson expects his company will be able to take one thousand people into space within the first year of operation.

VOA: special.2009.12.18

When I reflect on the first couple of years of Baidu's operation, I think there are three things that's very critical.

当我回想百度最初的那几年，有三件事是非常重要的。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

Michael Johnston is twenty-seven. He was first deployed to Iraq in two thousand three at the beginning of Operation Iraqi Freedom.

VOA: special.2011.07.08

This was the first operation of the Multi One Attitude Foundation in partnership with UNESCO-IOC.

UNESCO: Social and Human Sciences

His broken leg has been set, as has his jaw, which was fixed in the first operation so he could breathe.

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Her husband's employer, Electric Power Association, covered the first operation and a second operation to put in new batteries in 2007.

FORBES: Medical Insurance