Basimandibula
上颚基
🗣️ 情景例句
Yes, I went to the aerobics class today.
去了啦， 我上了有氧运动课了。
I have a lot of trouble with pronunciation.
我有发音的很多毛病。
Competition between ourselves, person against person, community against community,
然而人类之间的竞争，人与人，团体与团体，