1821, "period of three months," from French trimestre (early 17c.), from Latin trimestris "of three months," from tri- "three" (see tri-) + mensis "month" (see moon (n.)). Specific obstetrics sense is attested from 1916. Related: Trimestrial.
实用例句
1. the first trimester of pregnancy
妊娠的头三个月来自《权威词典》
2. She was okay with letting you fly in your third trimester?
勤斓 辄婕腔庵 论 沧?膻砩獗?来自电影对白
3. No data have been published on trimester teratogenic risk with ondansetron.
没有研究表明在妊娠早期使用恩丹西酮有致畸风险.来自互联网
4. To make routine inspection on stock material andes report it trimester.
定期检查包料库存并统计.来自互联网
5. The last weeks will all occur within a single magnetic trimester.
