placental villi的用法和樣例：
例句
- Placental chorioangioma is the most common benign tumor of placenta.
摘要胎盤(pán)絨毛膜血管瘤是胎盤(pán)最常見(jiàn)的良性腫瘤。 - These results indicate that renin-angiotensin system may exist independently in human placental villi during early pregnancy.
提示人妊娠早期胎盤(pán)絨毛組織可能已存在著(zhù)獨立的腎素一血管緊張素系統。
