The average difference in the length of pregnancy was less than two days.
而两组孕妇妊娠期长度的平均差别还不到两天。
2
While I can't say that running during pregnancy definitely reduced the length of my labor, especially for my first could it possibly have been longer than 20 hours?
虽然我不能说孕期跑步一定可以缩短生产时间，特别是我第一次生孩子时(竟然有可能是20多小时？ ！)
3
More studies are needed that follow women over time and measure the length of their telomeres before, during and after pregnancy, she said.