a maternity ward的用法和样例：
- In a maternity ward, the fraternal love gave way to gynarchy.
- Our receptionist has been pregnant for nine months and is now staying in a maternity ward, waiting for the birth of her first baby.
- A maternity ward with 30 beds.
- A maternity ward with30beds.
- Since the prefectural hospital in Tono closed its maternity ward in 2002, pregnant women have had no choice but to make the drive to Kamaishi, or another city with a maternity ward.