但是这些卵细胞却不能正常发育，其原因主要是受精核外部的部分卵细胞有缺陷。

But they never developed properly, largely because of defects in parts of the egg outside the fertilized nucleus.

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他用了八年时间才完成了这本小说的一部分，因为他不得不一再搁笔，去赚钱支付赛尔达住在疗养院和接受精神病医生治疗的费用。

He took eight years to finish the novel partly because he had to keep stopping to earn money to pay for sanitariums and psychiatrists treating Zelda.

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现在她的俱乐部共有约3000名会员，只有一小部分是在无意中成为单身妈妈的。会员中75%都选择了人工受精，其余25%是通过领养这条途径。

Of her estimated 3,000 members, only a small minority become moms unintentionally. 75 percent choose insemination, and 25 percent go the adoption route.

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