She found that young women in Denmark have a significantly lower natural conception rate than in past decades.

她发现，丹麦的年轻妇女的自然受孕率比过去的数十年要很明显地低。

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With all existing methods of conception, both natural and assisted, all children of such women would inherit the disease causing genes.

不管采用现有的哪一种怀孕方法，自然的还是人工辅助的，这样的妇女所生的孩子都将会遗传那些致病基因。

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By the mid-30s, eggs are of poor quality, and chances of natural conception have decreased considerably, and even IVF, the professor said, struggles to make up the shortfall.

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