trimester什么意思解释？

the first trimester of pregnancy妊娠的头三个月She was okay with letting you fly in your third trimester?　勤斓　辄婕腔庵　论　　沧?膻砩獗?To make routine inspection on stock material andes report it trimester.定期检查包料库存并统计....

trimester的音标：trimester的英式发音音标为：[traɪ'mestə(r)]trimester的美式发音音标为：[traɪ'mɛstɚ, 'traɪˌmɛs-]...