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”。
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Recent examination of some ancient rocks from the west coast of Scotland has now overturned that thinking, suggesting there were periods during snowball Earth when the climate woke up.，这一点在爱思助手下载最新版本中也有详细论述
The Somerset couple set off in October last year, but after a stress fracture for Langley-Wathen, they were forced to stop after covering just 60 miles.
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