tri·mes·ter/traɪˈmestə(r); NAmEtraɪˈmestər/noun1( medical 医) a period of three months during the time when a woman is pregnant 妊娠的三月期(医学上将妊娠期分为三期,每一期为三个月)◆the first trimester of pregnancy妊娠的头三个月2( NAmE) =
term
n. (2 )◆The school year is divided into three trimesters.一学年分三个学期。☞compare
1American English one of three periods of equal length that the school year is divided intoSYN term British English2one of the three-month periods of pregnancy
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