trimesterKK [traɪˋmɛstɚ] /tɹaɪˈmɛstɚ/發音名詞1孕期三個月、妊娠期Morning sickness usually improves after the first trimester.孕吐通常在懷孕前三個月之後就會改善。2學期美式The school year is divided into three trimesters.這所學校的學年分成三個學期。3三個月Sales figures are reviewed at the end of each trimester.銷售數字每三個月檢討一次。