指关节

例句：

1. 1. He had to use his fingers to open the jar.
   他不得不用手指打开瓶子。
2. 2. The doctor examined her finger joints carefully.
   医生仔细检查了她的手指关节。
3. 3. She put her hand on her finger joints and felt a twinge of pain.
   她把手放在手指关节上，感到一阵疼痛。