If a part of your body is painful, it hurts because it is injured or because there is something wrong with it. 疼痛的
adjective [原级] 疼痛的；引起疼痛的；令人痛苦（难受）的，困难的；<非正式>令人难堪的
Situations, memories, or experiences that are painful are difficult and unpleasant to deal with, and often make you feel sad and upset. (情形、记忆或经历) 痛苦的
- painful 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 34 Adolescence
