I never knew that you can?t fly in your third trimester!

原句是
Phoebe:I'm so jealous you're all going!I can't believe I never knew that you can't fly in your third trimester!
Phoebe:我真嫉妒你们可以去参加婚礼!我不相信他们说怀孕六个月后就不能坐飞机了.
trimester of pregnancy,third
妊娠末三个月