根据世界卫生组织的定义,一对夫妇12个月以上未采取任何避孕措施,性生活正常却未孕,就属于不孕不育。女性称为“不孕症”,男性称为“不育症”。
FirstFT: the day's biggest stories。关于这个话题,夫子提供了深入分析
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Space Forge have sent a microwave-sized factory into orbit, and have demonstrated that its furnace can be switched on and reach temperatures of around 1,000C.