J. Fetus and placenta. The fetal consequences are fetal growth restriction and oligohydramnios. Severe or early onset preeclampsia result in the greatest decrements in birth weight.

胎儿和胎盘。胎儿的结局是胎儿宫内生长受限和羊水过少，重度或早发的先兆子痫引起胎儿出生体重最大的减少。

youdao

Pregnant women and young children are particularly vulnerable to exposure because lead easily crosses the placenta and enters the fetal brain, where it interferes with normal development.

孕妇和幼儿是最易受损的人群，因为铅极易通过胎盘进入胎儿大脑，并且可以干扰其正常发育。

youdao

The major related factors of fetal distress were: abnormality of umbilical cord, oligohydramnios, and placenta abnormality.

胎儿窘迫的主要相关因素为脐带因素、羊水过少、胎盘因素等。

youdao

Obese mothers, twin fetuses, and a phenomenon called mosaicism, in which placenta DNA differs from fetal DNA, among other things, could confuse results.

WSJ: New Questions on Cutting-Edge Prenatal Tests