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单词“dyspnea”在英语中有“呼吸急促；呼吸困难”的含义。读音上，“dyspnea”读作[ˌdɪspəˈniː]。它主要用作名词，属于医学、生物学等多个领域的专业术语。其词根“-pnea”来自拉丁语，意味着“呼吸”，而前缀“di-”在英语中表示“两个”或“重复”。因此，dyspnea可以理解为重复的呼吸急促或呼吸困难。
例句：
1. She was so anxious that she couldn't catch her breath, feeling dyspneic. 她感到非常焦虑，以至于呼吸困难，无法呼吸。
2. The patient's condition is critical and he is experiencing severe dyspnea. 病人的病情危急，他感到呼吸困难严重。
3. I am feeling dyspneic again after just a few minutes of exercise. 在运动几分钟后，我又感到呼吸困难。
4. He had been feeling breathless and dyspneic for several days. 他几天来一直感到气喘吁吁，呼吸困难。
5. The old man had been experiencing shortness of breath and dyspnea for weeks. 这位老人几周来一直感到呼吸急促和呼吸困难。
6. After a long period of running, I experienced severe dyspnea. 跑了一段长路后，我感到呼吸困难严重。
7. The patient's dyspnea worsened after he was given a drug that was supposed to help him sleep. 在服用了本应有助于他入睡的药物后，患者的呼吸困难症状加重了。
8. She was having trouble catching her breath and felt very dyspneic. 她感到呼吸困难，很难呼吸。
9. He was having severe dyspnea and was advised to go to the hospital immediately. 他呼吸困难严重，被建议立即去医院。
10. I feel short of breath and have been experiencing severe dyspnea since I woke up this morning. 我感到气短，自从今天早上醒来后就一直感到呼吸困难。
以上就是关于单词“dyspnea”的用法和例句，希望可以帮助到您。
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