“Cases”是英文单词“case”的复数形式，根据上下文不同，含义也有所变化。以下是常见用法的总结：
| 词义 | 含义 | 示例 |
| 案例 | 指具体的事例或实例 | This is a good case of effective marketing. |
| 病例 | 医学中指患者的病情 | The doctor studied several cases of the disease. |
| 案件 | 法律或调查中的事件 | The police are investigating several cases of theft. |
| 外壳 | 用于电子产品等的保护套 | He bought a new case for his phone. |
“Cases”在不同领域有不同解释，需结合语境理解。掌握其多种含义有助于更准确地使用和理解英语表达。
