first trimester

同根派生

Some women experience morning sickness during the first trimester of pregnancy.
有些婦女在懷孕的頭三個月裡,早上有惡心感。
The first trimester of pregnancy.
妊娠的頭三個月
This is a 33-year-old, primigraida, with a normal first trimester screening.
患者，33嵗，初産婦，早期妊娠時檢查未看到異常。
First trimester ultrasound: a practical approach.In: McGahan J, Porto M, eds.Diagnostic obstetrical ultrasound.
早期妊娠通過左卵巢的經隂道超聲冠狀切麪，顯示黃躰囊腫4.;5cm(光標示)。
No data have been published on first trimester teratogenic risk with ondansetron.
沒有研究表明在妊娠早期使用恩丹西酮有致畸風險。