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。
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。
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。
The drug is not intended for use in women with a multiple pregnancy, such as a twin pregnancy, or other risk factors for preterm birth.
这种药物不是为多胎妊娠（如双胞胎妊娠）或有其他早产风险因素的妇女设计的。
Mothers of twins had more children overall compared with non-twin-bearing moms by virtue of their multiple births, but they also had more single children than moms of single babies.
双胞胎的母亲和非双胞胎的母亲相比，由于她们生育的更多，因此总的来说她们有更多的孩子。但是和只有一个孩子的母亲比起来，她们也有更多的独生子女。
Mothers of twins had more children overall compared with non-twin-bearing moms by virtue of their multiple births, but they also had more single children than moms of single babies.
双胞胎的母亲和非双胞胎的母亲相比，由于她们生育的更多，因此总的来说她们有更多的孩子。但是和只有一个孩子的母亲比起来，她们也有更多的独生子女。
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