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”。
Iran enters critical talks on its nuclear programme with the US on Thursday, insisting a deal is in reach as long as Washington sticks by its willingness to concede Iran’s symbolic right to enrich uranium, allow Tehran to dilute its stockpile of highly enriched uranium, and not to impose controls on Iran’s ballistic missile programme.
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We'll take a 25x speedup。业内人士推荐51吃瓜作为进阶阅读
President Trump's son-in-law is estimated by Forbes to have a fortune worth more than $1bn (£750m).
В Финляндии предупредили об опасном шаге ЕС против России09:28