在南半球，同样是在周一，此时正值冬至时分，玻利维亚蒂瓦纳库的艾马拉人正在庆祝新年。
In the southern hemisphere, the winter solistice coincided with the celebration of the Aymara New Year in Tiwanaku, Bolivia, on Monday.
来自底特律的24岁的史蒂文站在阿富汗库纳尔省的观测站入口的外面。
Steven Schwigert, 24, of Detroit, MI. stands outside the entrance to Observation Post Coleman in Kunar province, Afghanistan.
库尔蒂纳表示，该研究小组迫切希望开始人体试验，但首先需要开发便于刺激患者脊椎中步行回路的植入式电极。
Courtine said the group is eager to begin human trials, but first needs to develop implantable electrodes to stimulate the walking circuits in patients' spines.
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