trimester
柯林斯词典
1. N-COUNT The first trimester of a pregnancy is the first three months of the pregnancy. The second trimester is the period from three months to six months, and the third trimester is the period from six months to nine months. (怀孕期的)三个月
At the end of the first trimester, the fetus is about three inches long. 在怀孕的第三个月末，胎儿差不多有三英寸长了。
2. N-COUNT In colleges and universities in some countries, a trimester is one of the three main periods into which the year is divided. (一些国家的学院及大学中一学年的三分之一)学期
...the proposed school's trimester calendar. ...这份拟定的学校学期日历。
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trimester /traɪˈmɛstə/ (trimesters)
剑桥词典
- a three-month period
三个月时间
any of the three three-month periods that a human pregnancy is divided into
（人类妊娠的）三月期
The second trimester is generally the easiest part of a pregnancy . 一般说来，第二个三月期是怀孕期间最轻松的一段时间。
US
any of the three-month periods into which the school or college year is sometimes divided
（一学年分为三学期的）一学期
Many students arrange internships or work-study placements during the second trimester. 许多学生在第二学期安排实习或半工半读。
比较
semester 返回 trimester