Capsula articularis

例句：

1. 1. The joint capsule is a protective layer that surrounds the joint.
   关节囊是包围关节的保护层。
2. 2. Capsules are often used to encapsulate cells or tissues.
   胶囊通常用于包裹细胞或组织。
3. 3. The doctor removed the capsule and examined the inside of the joint.
   医生取出了关节囊并检查了关节的内部。