UK study suggests phone bans may not be effective 英国研究指出校园手机禁令 ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...
Asteroid contains building blocks of life, say scientists 科学家认为一小行星含有 ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...
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女性必知的 24 条实用健康忠告，第 3 条特别重要！
如果痛经突然加重或持续加重、痛经时出血模式改变、不在月经期仍有不适、月经周期过短或过长、月经出血时间延长、两次月经之间有出血， 或存在其他让你觉得不对劲的情况，早点去医院看看 。虚惊一场最好，万一发现什么异常也好早点处理。