研究人员通过分析这些数据发现，不论哪种类型的双胞胎，受到环境伤害的面部皮肤与吸烟、年龄增长、体重超标有很大关系。
From these data, the researchers noted strong ties, outside of twin status, between smoking, older age, and being overweight, and having facial skin with evidence of environmental damage.
一种类型的双胞胎在遗传基因上完全一致, 而另一种类型则在基因上并不一样, 就如同先后出生的兄弟或姐妹.
Twins can begenetically identical or they can be as different as siblings that were born atdifferent times.
很多人有双胞胎，谁决定购买这种类型的双慢跑婴儿推车。
Many people who have twins decide to purchase this type of double baby jogging stroller.
研究者检测一种特性，例如感觉的寻求，在相同的环境下，相同的双胞胎兄弟成长，考虑是否两个双胞胎类型是完全相似。
Researchers measure a trait, such as sensation-seeking, in identical and fraternal twin pairs growing up in the same environment, and consider whether the two twin types are equally similar.
研究者检测一种特性，例如感觉的寻求，在相同的环境下，相同的双胞胎兄弟成长，考虑是否两个双胞胎类型是完全相似。
Researchers measure a trait, such as sensation-seeking, in identical and fraternal twin pairs growing up in the same environment, and consider whether the two twin types are equally similar.
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