trimester of pregnancy

例句：

1. 1. During the first trimester, a woman's body is preparingfor pregnancy.
   在第一个孕期，女性的身体正在为怀孕做准备。
2. 2. The second trimester iswhen the fetus grows rapidly andthe mother's health improves.
   第二个孕期是胎儿迅速生长和母亲健康状况改善的时候。
3. 3. In the third trimester,the baby is born and the mother recovers from childbirth.
   第三个孕期是宝宝出生，母亲从分娩中恢复过来的时候。