In one version, students attend school for nine weeks and then have three weeks off.

一个版本里，学生上学九个星期，然后有三个星期假期。

youdao

Of the nineteen recognized polar bear subpopulations, three are declining, six are stable, one is increasing, and nine lack enough data.

在19个公认的北极熊亚种群中，3个在下降，6个较稳定，1个在增加，9个缺乏足够的数据。

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You can divide the detailed design, implementation and test phase into three iterations, each one aiming at implementing three of the nine subsystems.

你可以划分详细设计、实现和测试阶段到三个迭代中，每个迭代瞄准实现九个子系统中的三个。

youdao

She suggests that students budget at least one thousand three hundred dollars for a nine-month school year.

VOA: special.2009.05.21

Okay, which one is that? Seven o one three nine two four nine (70139249), what's...

我也一脸茫然，他们说的数字代表什么？70139249，什么意思？

社团小组信息 - SpeakingMax英语口语达人

And those nine people make three-- each one-- three other people smile.

那九个人-,每个人再用笑容感染三个人。

哈佛公开课 - 幸福课课程节选

West Indies will play nine one-day internationals and three Twenty20 games during the entire trip.

BBC: Windies women put faith in youth

The 6ft 7in paceman has also played nine one-day internationals, three of which were in Australia on England's last tour down under.

BBC: Surrey bowler Chris Tremlett surprised by Ashes call

Chalmers picked up four birdies, three on the front nine and one on the back, to maintain touch but also bogeyed the 17th.

CNN: Woods continues domination in Australia