健身教练教手臂运动 Fitness instructor teaching arm exercise

一个年轻的金发女孩在健身房的镜子前伸展双臂。健身教练在镜子前教年轻的金发女子伸展手臂的动作。

A young blonde girl is streaching her arms in front of the mirror at the gym. Fitness instructor teaches arm streching move to young blond woman in front of the mirror.