C-sections are seldom done at that stage of pregnancy.

很少在怀孕的那个阶段实施剖腹产。

《柯林斯英汉双解大词典》

Hematologic index is decreasing in later stage of pregnancy.

妊娠后期血液学指标将降低。

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The waveforms existed at the early stage of pregnancy and remained stationary.

此形态孕早期即可出现，且不随孕龄的增加而改变。

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The Kaiser study looked at 1, 063 women in the early stage of pregnancy.

CNN: Study: Caffeine may boost miscarriage risk

He said the study showed the effect on the baby depended on the stage of pregnancy the woman was at when she experienced the stressful event.

BBC: NEWS | Health | Babies inherit 9/11 mums' stress

It causes relatively mild conditions in cattle and sheep, but where infection takes place during the early stage of pregnancy it can result in congenital disorders of lambs and calves, stillbirths and abortions.

BBC: Schmallenberg virus: SBV detected in Orkney