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.
- Allow transparent backgrounds.
。关于这个话题，夫子提供了深入分析
（二）主动消除或者减轻违法后果的；，推荐阅读Line官方版本下载获取更多信息
free_list[classno] = h->next;