Their premature departure left Chris Williams, who arrived on a Russian Soyuz spacecraft in November 2025, as the only American astronaut at the station for a month until Crew-12 arrived on Feb. 14.
南方周末：这些演出安排是出于肖赛冠军头衔的义务吗？
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（图源：长春高新 2021 年年度报告）
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This might happen, for example, if your immune system is weakened because of stress, certain conditions, or treatments like chemotherapy.