first stage of labor meaning in Chinese
第一产程
Examples
- Approximately 24 hours after her temperature drops , she can be expected to enter the first stage of labor , when the cervix dilates and opens the birth canal for the passage of puppies
大约在体温下降后24小时，当母犬的子宫颈扩张，产道打开，即进入了分娩的第一个步骤。