This wire was then slowly pulled until the joint in large knuckle in the middle of each finger popped.
然后电缆慢慢拉伸手指,直到每根手指中间的大关节发出响声。
2
The middlejoint is the main source of finger motion.
手指中间的那个关节是手指的运动源泉。
3
Preparation for a stroke requires that you extend the finger at the middlejoint, while keeping the large joint at about the middle point of the limits of its range of motion.