They had been living and working aboard the ISS since August and were expected to stay until February. The crew returned on January 15, which was a decision made by NASA's chief health and medical officer. Once the crew had landed, administrator Jared Isaacman said it was a "serious situation" but didn't go into any detail.
圖像來源，GREG BAKER/AFP via Getty Images
，更多细节参见WPS下载最新地址
Фото: Evelyn Hockstein / Reuters，这一点在safew官方版本下载中也有详细论述
Department of State authorises non-essential officials to leave, with embassy staff told to book flights to anywhere
3. 对每个桶内排序（可用任意排序算法）