fetuin

例句：

1. 1. The fetus is developing inside the mother's womb.
   胎儿正在母体内的子宫内发育。
2. 2. Fetuin plays a crucial role in the growth and development of the fetus.
   胎膜在胎儿的成长和发育中起着至关重要的作用。
3. 3. During labor, the fetus is delivered through the cervix.
   分娩过程中，胎儿通过宫颈被推出。