noun 下载 🔗分享 哮喘，气喘. A long-term respiratory condition, in which the airways may unexpectedly and suddenly narrow, often in response to an allergen, cold air, exercise, or emotional stress. Symptoms include wheezing, shortness of breath, chest tightness, and coughing. Examples : "My brother suffers from asthma, which means he sometimes has trouble breathing, especially when he exercises. " 我弟弟有哮喘，这意味着他有时候呼吸困难，特别是运动的时候。 medicine disease condition body physiology organ 与AI对话词汇游戏阅读练习
