葡萄胎血管发育障碍，导致胚胎死亡。

The disturbance of blood development of hydatidiform mole may cause fetal death.

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而这会导致胚胎死亡。

This can lead to the death of the embryo.

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如果人胚胎是人，为什么我们从不将它们计算在婴儿死亡率内？

If human embryo is person, why we never count these into infant mortality rate?

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如果人胚胎是人，为什么我们从不将它们计算在婴儿死亡率内？

If human embryo is person, why we never count these into infant mortality rate?

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