学习，睡觉，聚会：三选二。

Study, sleep, party: Choose two of the three.

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化验资料表明，三选统与侏罗统中的油气在组分和物性上具有明显差异。

The test data indicate that there is a marked difference in composition and physical property between Triassic and Jurassic Series.

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每个玩者都要从中三选一，编码器，黑客，特务，他们有特定的优点和局限。

Each player chooses one of the three classes of characters—Coder, Hacker, Operative—with specific advantages and limitations.

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But it turns out actually over a third of people who took this class last year took the class because they felt depressed.

但是结果是去年有超过三分之一的人,选这门课是因为他们感觉抑郁。

哈佛公开课 - 幸福课课程节选

the winner is the person whose number is closest to 2/3 times the average The winner will win $5 minus the difference in pennies between her choice and that two-thirds of the average."

所选数字最接近2/3倍平均数人是赢家,赢家的奖金是5美元减去,所选数和平均数三分之二之差的百分数

耶鲁公开课 - 博弈论课程节选

Player II has three choices, this game is not symmetric, so they have different number of choices, that's fine.

参与人II有三种选择,这个博弈不是对称的,所以他们可选策略数量不同,这无所谓

耶鲁公开课 - 博弈论课程节选