有些胎儿的畸形部位得等到妊娠后期才能诊断出来。
Some foetal malformations cannot be diagnosed until late in pregnancy.
妊娠后期血液学指标将降低。
Hematologic index is decreasing in later stage of pregnancy.
这种方向上的不对称性似乎是源于妊娠后期及婴儿期转头的偏好。
This behavioral asymmetry is thought to stem from the same preference for head turning during the final weeks of gestation and during infancy.
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