Skeletogeny
骨胳形成[发生]
🗣️ 情景例句
All students without exception must take the English examination.
所有学生毫无例外地都必须参加英语考试。
Henry got a toothache and asked to be excused.
亨利牙疼，请求离开一下。
Yes, sir.
是的，先生。