Interactive effects, either between multiple genes or between genes and environment, will not be detected in a twin study.

相互影响的效果，或者在多种基因之间或是在基因与环境之间，并不能在双生子研究中检测到。

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The danger of defects from twin, triplet, and other multiple births is far greater than any risk posed by the fertility treatments themselves.

双胞胎、三胞胎以及多胞胎的各种缺陷的发生风险远较借由生殖技术获得的相应胚胎的发生风险高。

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Multiple collisions are theorized, some sort of collision with the Earth, and then a second collision between twin Moons.

该理论阐述了多次碰撞，某种对地球的撞击，第二次是在双胞胎月球之间。

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While the Super Bowl can draw 100, 000 people or more, the political convention is a multiple-day event during which the convention -- and the Twin Cities -- will be watched by a broader audience around the world, Mr. Canton said.

WSJ: With Republican Convention, It's a Green State