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.
应用推荐