To: Sergey Brin, Founder and Board Member, Google
NASA's decision to bring the crew home one month early, on Jan. 15, marked the agency's first controlled medical evacuation from the station in its 25 years of continuous operations. The incident highlighted the limits of treating complex health problems 250 miles away from Earth.
。safew官方版本下载对此有专业解读
适用：数据均匀分布，如[0,1)之间的浮点数
"They're basically like a man-made forest," says Spencer.