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  • The study used a "cross-over" design, which allowed each subject to serve as his or her own comparison group.

    这个研究试验采用了交叉设计，这样每一个研究对象的对照组就是他（她）自己。

    youdao

  • The study used a "cross-over" design, which allowed each subject to serve as his or her own comparison group.

    这个研究试验采用了交叉设计，这样每一个研究对象的对照组就是他（她）自己。

    youdao

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