A rail joint on twin ties.

轨道结点分段连接。

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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.

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。

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Secretary of State Condoleezza Rice said the twin attacks, which killed 229 people, destroyed buildings but not the ties that bind the United States, Kenya and Tanzania.

国务卿赖斯说，这两起爆炸袭击造成229人丧生，又炸毁了建筑物，但是没能破坏美国、肯尼亚和坦桑尼亚之间的关系。

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She describes the hapless Islamist radicals who were tried for attempting in February 1993 to topple one of the twin towers into the other as mere pawns used by far more sophisticated operatives with ties to Iraq.

CENTERFORSECURITYPOLICY: The right questions

ANKARA, Turkey (AP) Turkey's prime minister vowed Sunday his country won't be drawn into Syria's civil war, despite twin car bombings the government believes were carried out by a group of Turks with close ties to pro-government groups in Syria.

NPR: Turkey Says It Won't Be Drawn Into Syria Conflict