early trimester of pregnancy的用法和樣例：
例句
- The women were part of an ongoing maternity cohort who deliered singleton babies and had gien blood samples early in pregnancy.
受試者婦女有部分是正在產科醫院中生了單胞胎並在妊娠早期留有血樣的產婦。 - 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絨毛組織可能已存在著獨立的腎素一血管緊張素系統。
