// 复制数组（避免原数组被修改影响其他测试）
The mission has already faced years of delays, and Nasa is under pressure to get the astronauts on their way as soon as possible. However, the US space agency said it would not compromise on safety.
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"We don't have any alternatives. If grandparents were an option, we'd already be doing it."
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第二十七条 增值税法第二十四条第一款第二项所称医疗机构，是指依据有关规定设立的具有医疗机构执业资格的机构，包括军队、武警部队各级各类医疗机构，不包括营利性美容医疗机构。