A descent is a movement from a higher to a lower level or position. 下降
noun [具体名词] 下降，降落；斜坡，斜面；出身，血统；堕落，沦落；突然到访，突袭
All the contributors were of African descent. 所有捐助者都是非洲血统。
- descent 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 42 Modern cavemen
- Lesson 60 Too early and too late
- Lesson 34 Adolescence
