He defeated the champion in three sets.

他三盘击败了冠军。

《牛津词典》

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The United Nations has already imposed three sets of sanctions on Iran related to its nuclear activities, and pressure appears to be mounting for a fourth.

VOA: standard.2009.09.25

so you can see that there is going to be two sets in antibonding, three sets in bonding for a net of one, giving us the single bond.

因此你能看到,反键轨道上有两组，三组成键，得到一组净成键，所以成的是单键。

麻省理工公开课 - 固态化学导论课程节选

And in fact, one of the lessons you may already be realizing with P sets is that things seem to take twice, three times, four times longer than you actually might think.

从习题集中你可能已经得出的一个教训就是,程序所花的实际时间往往是你开始以为的两倍，三倍，四倍甚至更长。

哈佛公开课 - 计算机科学课程节选

Mauresmo played with heavy strapping on both thighs as she battled past Hantuchova in three sets.

BBC: SPORT | Tennis | Hingis upset after Dubai defeat

Nadal needed three sets to get past Argentina's Martin Alund, eventually prevailing 6-3 6-7 6-1.

CNN: Williams eyes Azarenka final after thrashing Sharapova

Second, there are three sets of options that were laid out at NATO for planning.

WHITEHOUSE: The White House