I'd ask him again and again to visualize the motion, to watch from within as the finger curled and extended, and to move along with it in his mind.
아버지에게 계속 말씀드렸어요. 움직임을 떠올리고, 손가락을 구부렸다  펴는 것처럼 생각하고 마음으로 그 움직임을 따라하라고.