placental position的用法和樣例：
例句
- Actually, the shape and height of a woman" belly during pregnancy is determined by her muscle tone and the position the baby is in.
不過實際上，孕婦肚子在懷孕期間的形狀及高度是取決於孕婦腹肌的緊實度及腹中胎兒的胎位。 - It was unexpected because calves in this position are usually dead, asphyxiated by the acute flexion of the neck and the pressure of the dam's powerful contractions.
太不可思議了，因為這種胎位下，小牛通常會因脖子的大幅扭曲和母牛的強力收縮窒息而死。
