These severe leg cramps usually pop up in the second trimester and continue through the third.
这种严重的腿部肌肉抽筋现象通常出现在怀孕中期，并持续整个怀孕后期。
Almost 90 percent of women experience some form of skin darkening beginning in the second trimester.
几乎90%的女性在怀孕中期都会经历一些形式的皮肤变暗。
Some couples like to wait until the second trimester, when the risk of miscarriage is greatly reduced.
一些夫妇喜欢等到妊娠中期再公布消息，这个时候流产的风险已经大大的减少了。
Conclusion Mifepristone can cause a hypoxic damage in the second trimester fetal umbilical vein.
结论米非司酮可造成中期妊娠脐静脉的缺氧性损伤。
However, hurricane exposure during the second trimester provoked a 20% rise in fetal distress at birth.
然而，根据研究，妊娠中期经受飓风的胎儿在出生时患胎儿窒息的风险增加了20%。
Objective To investigate the therapeutic value of multifetal pregnancy reduction in the second trimester.
目的探讨孕中期选择性减胎术在多胎妊娠中的治疗价值。
Results: The neuronal migration process was revealed on MR imaging during the second trimester of pregnancy.
结果：MR成像在中期妊娠阶段能够显示神经元移行过程。
Objective to observe the effect of mifepristone on ultrastructure of fetal kidney in the second trimester pregnancy.
目的：观察米非司酮对妊娠中期胎儿肾脏超微结构的影响。
Even if you weren't ill the past few months the second trimester signals an end to your baby's most vulnerable development period allowing you a bit more freedom.
即使你在过去的几个月中没有不舒服，怀孕中期也标志着你的婴儿已经度过了最容易受伤害的时期，这会给你更多的自由空间。
Even if you weren't ill the past few months, the second trimester signals an end to your baby's most vulnerable development period, allowing you a bit more freedom.
即使你在过去的几个月中没有不舒服，怀孕中期也标志着你的婴儿已经度过了最容易受伤害的时期，这会给你更多的自由空间。
Conclusion Ultrasound screening in the first trimester can effectively detect the abnormal fetuses in some degree, but the second trimester screening is still necessary.
结论孕早期超声筛查能早期检出部分严重、早发的胎儿异常，但不能替代孕中期超声筛查。
Objective to detect pregnant women's blood of superior thyroid artery in the second trimester of pregnancy through color ultrasound, to evaluate fetus skeleton development in uterus.
目的经彩超检测妊娠中期孕妇甲状腺上动脉血流，用于评估宫内胎儿骨骼发育。
Conclusion: it's effective to decrease the birth of fetal chromosomal abnormality by undergoing prenatal screening and diagnose with mother serum biochemical indicator in the second trimester.
结论孕中期应用母血清生化指标进行产前筛查，结合产前诊断是减少染色体异常患儿出生的有效方法。
These fetal kidneys (from a gestation estimated at 25 weeks in the second trimester) demonstrate a normal cut surface. Note the pelvis and calyces. Note the well-defined corticomedullary junctions.
这是妊娠中期，估计为25周胎儿肾。切面正常，可见肾盂、肾盏，皮质、髓质分界清楚。
The second trimester is coming to an end and your body is gearing up for the prenatal homestretch.
怀孕中期马上就要结束了，你的身体正在做产前的最后准备。
The second trimester is coming to an end and your body is gearing up for the prenatal homestretch.
怀孕中期马上就要结束了，你的身体正在做产前的最后准备。
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