Try to exercise three or four days a week for 30-45 minutes each time during your first and second trimesters.
在你怀孕的第一和第二个三个月里，尝试每周锻炼三或四次，每次锻炼30-45分钟。
Weight gain during the second and third trimesters of pregnancy is going to be more steady after the first trimester.
在怀孕的第二第三阶段，体重增加相对最初阶段变得稳定。
Represents trimesters in a reporting calendar.
表示报表日历中的每四个月。
Limit high-impact exercises My general advice is to not jog, particularly in the second and third trimesters.
限制冲击性强的锻炼我的一般性建议是不要颠簸，特别是在第二和第三个三个月。
Represents trimesters in a fiscal calendar.
表示会计日历中的四个月。
Mercury is being reactive, reacting to the magnetic trimesters as does the Earth.
水星和地球一样，同样受到磁场三月期的影响并作出反应。
The first and third trimesters had significantly higher fatigue levels than did the second trimester.
第一和第三孕期的疲惫显著高于第二孕期；
first and second trimesters are of the most concern.
最初的三个月和其后三个月是最重要的阶段。
A pregnancy is divided into three phases, or trimesters .
怀孕可以分成三个阶段，也可以说三期。
I must take two trimesters of American history this year.
我今年必须修读半年两学期的美国历史。
Analysis of abnormal chromosomal karyotypes in fetal amniotic fluid cells during the second and third trimesters of gestation
妊娠中晚期羊水细胞胎儿染色体异常核型分析
Application of ACCESS in screening of Down's syndrome in pregnant women at second trimesters
ACCESS在唐氏综合征筛查的应用
Fast Track Your Studies With Trimesters
完成学业的快捷途径
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