参与试制工厂的生产前期装配；
通常也称围产前期，即分娩前2周的时间。
Often called the early perinatal period, ie 2 weeks before delivery time.
产前期的病因包括先天畸形、感染以及血管功能不全。
In the prenatal period causes include congenital malformation, infection and vascular insufficiency.
《国际循环》：您是否相信妊娠高血压本身起源于产前期？
International Circulation: on the subject of prenatal period and hypertension, do you believe it has its origins in the prenatal period?
在幼儿期(即从产前期至8岁)，儿童迅速发育，并深受环境影响。
During early childhood (from the prenatal period to eight years of age), children undergo rapid growth that is highly influenced by their environment.
房地产前期的成本控制大致包括土地成本控制阶段、投资决策阶段以及规划设计阶段。
The cost control of real estate in earlier stage broadly includes the stage of controlling land cost, the stage of investment and decision-making and the stage of plan and design.
如果医生没有在你怀孕前期建议你做绒毛膜绒毛样检的话，你现在需要考虑下做个产前检查了。
If your doctor didn't recommend a CVS test in your first trimester you'll need to consider prenatal testing now.
如果医生没有在你怀孕前期建议你做绒毛膜绒毛样检的话，你现在需要考虑下做个产前检查了。
If your doctor didn't recommend a CVS test in your first trimester you'll need to consider prenatal testing now.
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