0 a three-month period -- 三個月時間
The second trimester is generally the easiest part of a pregnancy. 一般說來，第二個三月期是懷孕期間最輕鬆的一段時間。
Many students arrange internships or work-study placements during the second trimester. 許多學生在第二學期安排實習或半工半讀。
First trimester insults affecting neurogenesis are unlikely, as gross structural defects (such as schizencephaly and polymicrogyria) would be expected.
It is doubtful if dietary supplement in the last trimester would be of benefit, at least in the developed countries.
So much debate goes on without "personifying" the fetus, especially in the first trimester; yet twins probably do possess a unique perspective.
He performed the procedure on detection of cervical dilatation with bulging membranes in the second trimester.
However, sensitivity may be lower for babies born to women infected in the first trimester of pregnancy.
First trimester screening for fetal aneuploidy: biochemistry and nuchal translucency.
During pregnancy accelerated destruction of platelets can occur at any time but tends to appear during the late second and the third trimesters.
This would reduce the number of women undergoing unnecessary third trimester scans and may reduce prolonged hospital stays and caesarean sections.
